Question: Who led the Un-American Activities Committee overseen by the assembly, that presides over the impeachment of the president, of the country that the Liberian flag and constitution are modeled after?

full_context: Document 1: Impeachment: Similar to the British system, Article One of the United States Constitution gives the House of Representatives the sole power of impeachment and the Senate the sole power to try impeachments of officers of the U.S. national government. (Various state constitutions include similar measures, allowing the state legislature to impeach the governor or other officials of the state government.) In contrast to the British system, in the United States impeachment is only the first of two stages, and conviction during the second stage requires a two - thirds majority vote. Impeachment does not necessarily result in removal from office; it is only a legal statement of charges, parallel to an indictment in criminal law. An official who is impeached faces a second legislative vote (whether by the same body or another), which determines conviction, or failure to convict, on the charges embodied by the impeachment. Most constitutions require a supermajority to convict. Although the subject of the charge is criminal action, it does not constitute a criminal trial; the only question under consideration is the removal of the individual from office, and the possibility of a subsequent vote preventing the removed official from ever again holding political office in the jurisdiction where he or she was removed. Impeachment with respect to political office should not be confused with witness impeachment.
Document 2: Impeachment in the United States: Impeachment in the United States is the process by which the lower house of a legislature brings charges against a civil officer of government for crimes alleged to have been committed, analogous to the bringing of an indictment by a grand jury. At the federal level, this is done by the House of Representatives. Most impeachments have concerned alleged crimes committed while in office, though there have been a few cases in which officials have been impeached and subsequently convicted for prior crimes. The impeached official remains in office until a trial is held. That trial, and their removal from office if convicted, is separate from the act of impeachment itself. Analogous to a trial before a judge and jury, these proceedings are (where the legislature is bicameral) conducted by upper house of the legislature, which at the federal level is the Senate.
Document 3: Molotov–Ribbentrop Pact: Before the pact's announcement, Communists in the West denied that such a treaty would be signed. Future member of the Hollywood Ten Herbert Biberman denounced rumors as "Fascist propaganda". Earl Browder, head of the Communist Party USA, stated that "there is as much chance of agreement as of Earl Browder being elected president of the Chamber of Commerce." Beginning in September 1939, the Soviet Comintern suspended all anti-Nazi and anti-fascist propaganda, explaining that the war in Europe was a matter of capitalist states attacking each other for imperialist purposes. Western Communists acted accordingly; while before they supported protecting collective security, now they denounced Britain and France going to war.
Document 4: Impeachment in the United States: At the federal level, Article Two of the United States Constitution states in Section 4 that ``The President, Vice President, and all civil Officers of the United States shall be removed from Office on Impeachment for, and conviction of, Treason, Bribery, or other High Crimes and Misdemeanors. ''The House of Representatives has the sole power of impeaching, while the United States Senate has the sole power to try all impeachments. The removal of impeached officials is automatic upon conviction in the Senate. In Nixon v. United States (1993), the Supreme Court determined that the federal judiciary can not review such proceedings.
Document 5: Federal Bureau of Investigation: During the 1950s and 1960s, FBI officials became increasingly concerned about the influence of civil rights leaders, whom they believed had communist ties or were unduly influenced by them. In 1956, for example, Hoover sent an open letter denouncing Dr. T.R.M. Howard, a civil rights leader, surgeon, and wealthy entrepreneur in Mississippi who had criticized FBI inaction in solving recent murders of George W. Lee, Emmett Till, and other blacks in the South. The FBI carried out controversial domestic surveillance in an operation it called the COINTELPRO, which was short for "COunter-INTELligence PROgram." It was to investigate and disrupt the activities of dissident political organizations within the United States, including both militant and non-violent organizations. Among its targets was the Southern Christian Leadership Conference, a leading civil rights organization with clergy leadership.
Document 6: Impeachment in the United States: The proceedings unfold in the form of a trial, with each side having the right to call witnesses and perform cross-examinations. The House members, who are given the collective title of managers during the course of the trial, present the prosecution case, and the impeached official has the right to mount a defense with his own attorneys as well. Senators must also take an oath or affirmation that they will perform their duties honestly and with due diligence. After hearing the charges, the Senate usually deliberates in private. The Constitution requires a two thirds super majority to convict a person being impeached.
Document 7: House Un-American Activities Committee: The House Un-American Activities Committee (HUAC; a.k.a., House Committee on Un-American Activities, HUAC or HCUA) was an investigative committee of the United States House of Representatives. The HUAC was created in 1938 to investigate alleged disloyalty and subversive activities on the part of private citizens, public employees, and those organizations suspected of having communist ties. In 1969, the House changed the committee's name to ``House Committee on Internal Security ''. When the House abolished the committee in 1975, its functions were transferred to the House Judiciary Committee.
Document 8: American Colonization Society: The Society for the Colonization of Free People of Color of America, commonly known as the American Colonization Society (ACS), was a group established in 1816 by Robert Finley of New Jersey which supported the migration of free African Americans to the continent of Africa. The society in 1821 -- 22 helped to found a colony on the Pepper Coast of West Africa, as a place for free - born or manumitted American blacks. The ACS met with immediate and continuing objections from such African - Americans as James Forten and David Walker, who wished to remain in the land of their birth, saw colonization as a racist strategy for protecting slavery and purging the U.S. of its black citizens, and preferred to fight for equal rights at home. Colonizers were also met with resistance and attacks from those already living in and around the areas being colonized. There was some religious support and missionary efforts were part of the colonization. Disease was a major problem and took a deadly toll.
Document 9: Constitution of Liberia: Additionally, Liberia was governed by two constitutions during the rule by the American Colonization Society under the Commonwealth of Liberia:
Document 10: Publicity Department of the Communist Party of China: It was founded in May 1924, and was suspended during the Cultural Revolution, until it was restored in October 1977. It is an important organ in China's propaganda system, and its inner operations are highly secretive.
Document 11: Liberia: In the United States, there was a movement to resettle American free blacks and freed slaves in Africa. The American Colonization Society was founded in 1816 in Washington, DC for this purpose, by a group of prominent politicians and slaveholders. But its membership grew to include mostly people who supported abolition of slavery. Slaveholders wanted to get free people of color out of the South, where they were thought to threaten the stability of the slave societies. Some abolitionists collaborated on relocation of free blacks, as they were discouraged by discrimination against them in the North and believed they would never be accepted in the larger society. Most African Americans, who were native-born by this time, wanted to improve conditions in the United States rather than emigrate. Leading activists in the North strongly opposed the ACS, but some free blacks were ready to try a different environment.
Document 12: History of Liberia: Liberia is a country in West Africa which was founded, established, colonized, and controlled by citizens of the United States and ex-Caribbean slaves as a colony for former African American slaves and their free black descendants. It is one of only two sovereign countries in the world that were started by citizens and ex-Caribbean slaves of a political power as a colony for former slaves of the same political power, the other being Sierra Leone, established by Great Britain. In 1847, Liberia proclaimed its independence from the American Colonization Society (ACS).
Document 13: United States Senate: The Senate also has a role in ratifying treaties. The Constitution provides that the president may only "make Treaties, provided two thirds of the senators present concur" in order to benefit from the Senate's advice and consent and give each state an equal vote in the process. However, not all international agreements are considered treaties under US domestic law, even if they are considered treaties under international law. Congress has passed laws authorizing the president to conclude executive agreements without action by the Senate. Similarly, the president may make congressional-executive agreements with the approval of a simple majority in each House of Congress, rather than a two-thirds majority in the Senate. Neither executive agreements nor congressional-executive agreements are mentioned in the Constitution, leading some scholars such as Laurence Tribe and John Yoo to suggest that they unconstitutionally circumvent the treaty-ratification process. However, courts have upheld the validity of such agreements.The Constitution empowers the House of Representatives to impeach federal officials for "Treason, Bribery, or other high Crimes and Misdemeanors" and empowers the Senate to try such impeachments. If the sitting president of the United States is being tried, the chief justice of the United States presides over the trial. During an impeachment trial, senators are constitutionally required to sit on oath or affirmation. Conviction requires a two-thirds majority of the senators present. A convicted official is automatically removed from office; in addition, the Senate may stipulate that the defendant be banned from holding office. No further punishment is permitted during the impeachment proceedings; however, the party may face criminal penalties in a normal court of law.
Document 14: Liberia: The Republic of Liberia, beginning as a settlement of the American Colonization Society (ACS), declared its independence on July 26, 1847. The United States did not recognize Liberia's independence until during the American Civil War on February 5, 1862. Between January 7, 1822 and the American Civil War, more than 15,000 freed and free-born Black Americans from United States and 3,198 Afro-Caribbeans relocated to the settlement. The Black American settlers carried their culture with them to Liberia. The Liberian constitution and flag were modeled after the United States. In January 3, 1848 Joseph Jenkins Roberts, a wealthy free-born Black American from Virginia who settled in Liberia, was elected as Liberia's first president after the people proclaimed independence.
Document 15: House Un-American Activities Committee: On May 26, 1938, the House Committee on Un-American Activities was established as a special investigating committee, reorganized from its previous incarnations as the Fish Committee and the McCormack - Dickstein Committee, to investigate alleged disloyalty and subversive activities on the part of private citizens, public employees, and those organizations suspected of having communist or fascist ties; however, it concentrated its efforts on communists. It was chaired by Martin Dies Jr. (D - Tex.), and therefore known as the Dies Committee.
ground_truth: Martin Dies Jr. (D - Tex.)
sub_queries: What was the Liberian flag and constitution modeled after? Answer: the United States
who presides over any impeachment trial of the president of the United States Answer: The House
who led the The House un american activities committee Answer: Martin Dies Jr. (D - Tex.)