Trump trial could end soon; Alexander says no to witnesses

Republican Sen. Lamar Alexander of Tennessee will oppose calling more witnesses in President Donald Trump’s impeachment trial, all but dashing Democratic efforts to hear more testimony and boosting odds the Senate will vote imminently to acquit without new testimony, in a matter of days.

GOP defends Trump as Bolton book adds pressure for witnesses

Senators faced mounting pressure Monday to summon John Bolton to testify at President Donald Trump's impeachment trial even as Trump's lawyers brushed past extraordinary new allegations from Trump's former national security adviser and focused instead on corruption in Ukraine and historical arguments for acquittal.

Bolton says Trump tied Ukraine funds to probe

President Donald Trump said he wanted to maintain a freeze on military assistance to Ukraine until it aided political investigations into his Democratic rivals, former national security adviser John Bolton recounts in a draft of his forthcoming book.