Federal prosecutors want to prove that Roger Stone is a liar—and not just about his contacts with WikiLeaks.

During a pretrial hearing in federal court Wednesday, attorneys with the U.S. Attorney’s Office for D.C. urged U.S. District Judge Amy Berman Jackson of the District of Columbia to allow them to argue before a jury that Stone wanted to obstruct the House Intelligence Committee’s Russia investigation with not just the false statements he’s charged with making, but through other alleged lies too.