Rick Santorum endorses Mitt Romney despite differences, all of which are outweighed by the imperative of ousting President Obama this fall, President Obama speaks to college students in New York yesterday about his to-do list, Mitt Romney pokes fun at the Obama campaign's 'Life of Julia' online cartoon info-graphic, and a group of lawmakers on Capitol Hill issue a second appeal to Vanderbilt University expressing concern over the impact of Vanderbilt's non-discrimination policy on religious student groups.