Blumenthal: Russia Investigation Will End When We Uncover All the Evidence ‘That May Exist’

Sen. Richard Blumenthal (D., Conn.) said Thursday that the investigation into Russian election interference and allegations of collusion against the Donald Trump campaign will continue until all evidence that "may exist" is found.

During an interview on MSNBC's "Morning Joe," Blumenthal previewed Thursday's meeting between Donald Trump Jr. and Senate Judiciary Committee investigators regarding contacts between the Trump campaign and the Russians in 2016.

"Senator, when will this process conclude?" panelist Mark Halperin asked.

"I think it will conclude when we conclude that we've uncovered all of the evidence of potential compromises at the Department of Justice," Blumenthal said. "It's our oversight responsibility to determine whether there was any kind of wrongdoing relating to that Department of Justice investigation, and we're going to continue working until we uncover all the evidence that may exist of obstruction of justice, of collusion between the Trump campaign and the Russians in interfering in this election, and we're determined to get at the truth."

The use of the term "may exist" suggests the investigation could continue indefinitely.