Question: Which former Chairman of the National Republican Senatorial Committee derailed the Email Privacy Act after it was passed in the 114th Congress?

full_context: Document 1: Protecting Internet Freedom Act: The Protecting Internet Freedom Act was introduced in June 2016 by United States Senator Ted Cruz in order to "prohibit the National Telecommunications and Information Administration from allowing the Internet Assigned Numbers Authority functions contract to lapse unless specifically authorized to do so by an Act of Congress."
Document 2: Cyber Intelligence Sharing and Protection Act: The Cyber Intelligence Sharing and Protection Act (CISPA (112th Congress), (113th Congress), (114th Congress)) is a proposed law in the United States which would allow for the sharing of Internet traffic information between the U.S. government and technology and manufacturing companies. The stated aim of the bill is to help the U.S. government investigate cyber threats and ensure the security of networks against cyberattacks.
Document 3: Protecting Cyber Networks Act: The Protecting Cyber Networks Act (H.R. 1560) is a bill introduced in the 114th Congress by Rep. Devin Nunes (R-CA), chairman of the House Permanent Select Committee on Intelligence. The legislation would allow companies and the government to share information concerning cyber threats. To overcome privacy concerns, the bill expressly forbids companies from sharing information with the National Security Agency (NSA) or Department of Defense (DOD).
Document 4: Cybersecurity Information Sharing Act: The Cybersecurity Information Sharing Act (CISA [113th Congress], [114th Congress]) is a United States federal law designed to "improve cybersecurity in the United States through enhanced sharing of information about cybersecurity threats, and for other purposes". The law allows the sharing of Internet traffic information between the U.S. government and technology and manufacturing companies. The bill was introduced in the U.S. Senate on July 10, 2014, and passed in the Senate October 27, 2015. Opponents question CISA's value, believing it will move responsibility from private business to the government, thereby increasing vulnerability of personal private information, as well as dispersing personal private information across seven government agencies, including the NSA and local police.
Document 5: United States Senate election in Texas, 2014: The 2014 United States Senate election in Texas was held on November 4, 2014 to elect a member of the United States Senate. Incumbent Republican Senator and Senate Minority Whip John Cornyn ran for re-election to a third term. Primary elections were held on March 4, 2014. The Democratic primary required a runoff election on May 27, 2014 to choose an opponent to Cornyn. David Alameel, who came in first in the primary, won the runoff and became his party's nominee.
Document 6: Federal Reserve Transparency Act: The Federal Reserve Transparency Act of 2015 ( ) was a bill introduced in the U.S. House of Representatives of the 114th United States Congress by Congressman Thomas Massie (KY-4). It included proposals for a reformed audit of the Federal Reserve System (the "Fed"). The Senate version was introduced by Senator Rand Paul (R-KY). ( ). "
Document 7: Thad Cochran: William Thad Cochran (born December 7, 1937) is an American Republican politician. He is the current senior United States Senator from Mississippi (the third most-senior Senator and the second most-senior Republican member), first elected to the Senate in 1978, and the Chairman of the Senate Appropriations Committee, which he had also chaired from 2005 to 2007. He also chaired the Senate Agriculture Committee from 2003 to 2005. Cochran won reelection to a seventh term in 2014, after defeating Chris McDaniel in an intense primary run-off election. He is currently the dean of the Mississippi congressional delegation. He is also on track to become the longest serving Republican Member of Congress if he serves until 2019, surpassing Joseph Gurney Cannon, former Speaker of the House, who served for 46 years.
Document 8: Jeff Flake: Jeffry Lane Flake (born December 31, 1962) is an American politician and member of the Republican Party who since 2013 has served as the Junior United States Senator from Arizona alongside former 2008 presidential nominee John McCain.
Document 9: Open Our Democracy Act of 2017: The Open Our Democracy Act of 2017 (H.R. 2981 of the 115th congress) is a bill sponsored by Rep. John Delaney which would establish Election Day as a federal holiday, mandate all congressional primary elections to be open elections so all eligible voters can participate in them, and end gerrymandering by requiring independent commissions to draw the districts in each state.
Document 10: Jerry Moran: Gerald W. Moran (born May 29, 1954) is the junior United States Senator from Kansas and a member of the Republican Party. He served as Chairman of the National Republican Senatorial Committee for the 113th U.S. Congress, during which he led successful Republican efforts in United States Senate elections, 2014, producing the first Republican Senate majority since 2006. Previously, he served as a member of the United States House of Representatives, representing 2=nd
Document 11: John Cornyn: John Cornyn III (born February 2, 1952) is an American politician, lawyer and the senior United States Senator from Texas, serving since 2002. He is a member of the Republican Party and the current Senate Majority Whip for the 115th Congress. Cornyn previously served as Chairman of the National Republican Senatorial Committee from 2007 to 2011.
Document 12: Stop Online Piracy Act: The Stop Online Piracy Act (SOPA) was a controversial United States bill introduced by U.S. Representative Lamar S. Smith (R-TX) to expand the ability of U.S. law enforcement to combat online copyright infringement and online trafficking in counterfeit goods. Provisions included the requesting of court orders to bar advertising networks and payment facilities from conducting business with infringing websites, and web search engines from linking to the websites, and court orders requiring Internet service providers to block access to the websites. The proposed law would have expanded existing criminal laws to include unauthorized streaming of copyrighted content, imposing a maximum penalty of five years in prison.
Document 13: Tom Cole: Thomas Jeffery Cole (born April 28, 1949) is the U.S. Representative for Oklahoma 's 4 congressional district , serving since 2003. He is a member of the Republican Party. He is a Deputy Majority Whip. The chairman of the National Republican Congressional Committee (NRCC) from 2006 to 2008, he was, during his tenure, the fourth-ranking Republican leader in the House. As of 2015, Cole – a member of the Chickasaw Nation – is one of only two registered Native Americans in Congress (the other being fellow Oklahoman Markwayne Mullin).
Document 14: John Thune: John Randolph Thune (born January 7, 1961) is an American politician and senior United States Senator from South Dakota, a member of the Republican Party. He previously served as a United States Representative for South Dakota 's at-large congressional  . He became South Dakota's senior senator with the retirement of Tim Johnson in 2015. He is South Dakota's senior senator, having served as the GOP's Chief Deputy Whip in 2006, chairman of the Republican Policy Committee in June 2009, and Republican Conference Chairman in 2011, the third-ranking position in the Senate. He has worked in politics and civic organizations since completing his MBA graduate degree. He is also the current dean of South Dakota's congressional delegation.
Document 15: Email Privacy Act: The Email Privacy Act is a bill introduced in the United States Congress. The bipartisan proposed federal law is sponsored by Representative Kevin Yoder, a Republican from Kansas, and Representative Jared Polis, a Democrat of Colorado. The law is designed to update and reform existing online communications law, specifically the Electronic Communications Privacy Act (ECPA) of 1986. In the 113th Congress (2013-14), the bill never made it out of subcommittee. In the 114th Congress (2015-16), the bill was unanimously passed by the House, but was derailed in the Senate following a series of weakening amendments offered by Republican Senator John Cornyn of Texas, the Senate Majority Whip. In the 115th Congress (2017-18), it was passed by the House on a voice vote.
ground_truth: John Cornyn