Facebook's CEO told CNN he's willing to testify before Congress regarding the Cambridge Analytica scandal if he's the most knowledgeable person to go.
The announcement comes a day after she testified before the House intelligence committee as part of the Russia investigation.
Facebook, Twitter and Google are set to testify at a Senate subcommittee hearing to help find solutions to Russian disinformation.
The Wall Street Journal says special counsel Robert Mueller impaneled a grand jury, which could show the Russia investigation is speeding up.
The Washington Post reported that U.S. officials intercepted Russian communications that refute Jeff Sessions' Senate testimony.
White House senior adviser Jared Kushner, Donald Trump Jr. and former campaign chairman Paul Manafort are scheduled to testify next week.
Shkreli allegedly wrote in a letter to his employee's wife, "I hope to see you and your four children homeless."
In an interview, Sen. Chuck Schumer invited President Trump to testify before the Senate to share his side of the Comey story.
He wants a chance to respond to former FBI Director James Comey's testimony.
During his testimony before the Senate Intelligence Committee, Comey shared what he thought about media reports on classified information.
Republican Rep. Devin Nunes is splitting the focus of the Russia investigation to include "unmasking."
Former national security adviser Michael Flynn has refused to cooperate with a subpoena from the Senate Intelligence Committee.