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Michael Cohen, President Trump's former lawyer and fixer, returns to Capitol Hill on Tuesday for a full day of closed-door testimony before the House Intelligence Committee.

Last week, Cohen testified in private before the committee and its Senate counterpart and publicly before the House Oversight Committee. He will reportedly face questions about a possible pardon his lawyer apparently floated with Trump's attorneys, among other topics.

Chair Adam Schiff (D-Calif.) said the committee asked Cohen to return discuss additional documents and "shed light on a lot of issues that are very core to our investigation.” The investigation centers on Russian election meddling, possible Trump campaign collusion, and obstruction of justice. Cohen is headed to prison in May for lying about a Trump Tower Moscow deal he was negotiating on Trump's behalf and for violating campaign finance laws by paying off a porn actress so she wouldn't disclose an extramarital affair she says she had with Trump.