Joe Biden says he won't testify in impeachment trial in exchange for Republican witnesses

Former Vice President Joe Biden said Wednesday that he would not make a deal where he would testify at the impeachment trial in exchange for the testimonies of former and current top Trump officials.

"The reason why I would not make the deal, the bottom line is, I, this is a constitutional issue. And we're not going to turn it into a farce, into some kind of political theater," Biden, a Democratic presidential candidate, said at an event in Osage, Iowa.

The Senate impeachment trial of President Donald Trump is...