No give: Trump's impeachment defense, prosecutors dig in

Advocates for and against President Donald Trump gave no ground Sunday on his Senate impeachment trial, digging in on whether a crime is required for his conviction and removal and whether witnesses will be called.Senate Majority Leader Mitch McConnell, R-Ky., was shedding no light on what will be the same as — and different from — the precedent of President Bill Clinton's impeachment trial in 1999.All sides agitated to get on with it, none more than the four Democratic senators runn