But Sekulow, on Friday, appeared to reference reports from late last year that State Department officials were worried that Hunter Biden's work for Burisma represented a conflict of interest given his father's role as vice president.

"Believe me, you'll hear about that issue too," Sekulow said.

The president's defense team will get to start making its case at 10 a.m. on Saturday, after three days of presentations by House Democrats.

The Senate is expected to be in session from approximately 10 a.m. until 1 p.m. on Saturday. Trump's team will also be able to make its defense on Monday and Tuesday.

Sekulow declined to say on Friday if the team will use its full 24 hours, but said it would present its case from "10 to one-ish."

"They said can you proceed for three hours tomorrow and then take the other time you need to present your case," he said.