Former Gov. Chris Christie said it would be "politically stupid" for Democrats to start the impeachment process of President Trump in Congress and dared them to do so. "If they want to do it, game on," Christie said of impeachment. "If they want to do it, go ahead and do it, but stop skirting around the edges and acting as if you may do, but you may not do it and try to make a political point out of it." "Either do it or don’t, otherwise, let’s have a political election in 2020 and people can decide these issues then," the former New Jersey governor said in an interview with MSNBC's Stephanie Ruhle at a SALT conference on Wednesday.