Question: Who does the US secret service assign investigation of the assassination plot ? If there is no answer, please output "Insufficient information to provide an answer.". Movie title: The Interpreter Context: Silvia Broome (Nicole Kidman) is an interpreter working at the United Nations in New York City. She was raised in the Republic of Matobo, a fictional African country, but has dual citizenship. The U.N. is considering indicting Edmond Zuwanie (Earl Cameron), Matobo's president, to stand trial in the International Criminal Court. Initially a liberator, over the past 20 years he has become as corrupt and tyrannical as the government he overthrew, and is now responsible for ethnic cleansing and other atrocities within Matobo. Zuwanie is soon to visit the U.N. and put forward his own case to the General Assembly, in an attempt to avoid the indictment. A security scare forces the evacuation of the U.N. building, and, as Silvia returns at night to reclaim some personal belongings, she overhears 2 men discussing an assassination plot in Ku (an East-Africa dialect she understands). Silvia runs scared from the building when those discussing the plot become aware of her presence. The next day, Silvia recognizes words in a meeting where she is interpreting from phrases she overheard the night before, and reports the incident to U.N. security; the plot's target appears to be Zuwanie himself. They, in turn, call in the U.S. Secret Service, who assign Tobin Keller (Sean Penn) and Dot Woods (Catherine Keener) to investigate, as well as protect Zuwanie when he arrives. Keller, whose estranged wife was accidentally killed just days earlier, learns that Silvia has, in the past, been involved in a Matoban guerrilla group, that her parents and sister were killed by land mines laid by Zuwanie's men, and that she has dated one of Zuwanie's political opponents. Although Keller is suspicious of Silvia's story, the two grow close -- in part because of their shared grief -- and Keller ends up protecting her from attacks on her person. Silvia later finds that her brother Simon and her lover Xola were killed (as shown in the opening scene). The purported assassin is discovered (and shot to death) while Zuwanie is in the middle of his...
The answer to this question is:
They assign Tobin Keller (Sean Penn) and Dot Woods (Catherine Keener) to investigate.