The White House is considering making the argument that President Trump has not officially been impeached, given that House Speaker Nancy Pelosi has not transmitted the articles of impeachment to the Senate, two sources involved in the president's impeachment defense told CBS News.

The House voted to impeach Mr. Trump on two articles of impeachment — abuse of power and obstruction of Congress — on Wednesday. However, Pelosi told reporters on Thursday that the House would wait to deliver the articles until the Senate had laid out the rules for the trial.

"When we see the process that's set forth in the Senate, then we'll know the number of managers we'll have to move forward, and who we would choose," the California Democrat said. The House must vote on a resolution designating impeachment managers to prosecute the case against Mr. Trump in the Senate before delivering the articles.