The Senate sent a strong signal Tuesday that there are not nearly enough votes to convict President Trump in an impeachment trial when only five GOP senators rejected an effort by Sen. Rand Paul (R-Ky.) to declare the looming trial unconstitutional. The Senate voted 55-45 to set aside Paul's motion, with all but five GOP senators siding with Paul. GOP Sens. Mitt Romney (Utah), Ben Sasse (Neb.), Susan Collins (Maine), Lisa Murkowski (Alaska) and Pat Toomey (Pa.) voted with Democrats to table Paul's point of order. The vote is the clearest sign yet that Trump is heading toward a second...