'They're having a problem': Republicans say need for scholars to explain impeachment case betrays fear

Congressional Republicans see Democratic desperation on impeachment, arguing that summoning constitutional scholars to the House Judiciary Committee reveals fear that the case against President Trump could crumble.

Four law professors are slated to testify on Capitol Hill on Wednesday, ostensibly to provide constitutional justification for Trump’s impeachment on grounds he abused his power in dealings with Ukraine. Republicans contend Democrats would have immediately called fact witnesses who could bolster the allegations against the president if impeachment was on firm ground politically.