Sen. Ted Cruz (R-TX) has decided he may want some help from Washington after all to stop Trump. But alas, his entreaties to his Senate colleagues aren't going very well. Cruz is facing varied and dynamic obstacles in his quest to build support on the Hill. Some senators are stubbornly nursing grudges against the freshman senator's 2013 government shutdown gambit or any other number of slights and affronts he committed as a freshman senator that made him deeply unpopular. Other senators endorsed candidates who already dropped out of the race and are unwilling to repeat that mistake with Donald Trump...