Washington: Republican Party members have formally asked the US Department of Justice to open a criminal investigation for perjury against the Democratic Party's presumptive nominee Hillary Clinton to determine if she lied to Congress.

"The evidence collected by the FBI during its investigation of Secretary Clinton's use of a personal email system appears to directly contradict several aspects of her sworn testimony," chairmen of the US House Judiciary Committee and the Oversight Committee, Bob Goodlatte and Jason Chaffetz, said in a statement on Monday.