Heath care is a big issue in the presidential campaign, and Seth Meyers had some fun to poke at Donald Trump's vague plan to replace ObamaCare with something "terrific." But mostly he looked at single-payer plans like that proposed by Sen. Bernie Sanders. "Some Democrats, like Hillary Clinton, have questioned whether such a system would be feasible, but we may be about to get a real-life test case in Colorado," Meyers said on Monday's Late Night.