John Oliver explains why the GOP is having so much trouble repealing and replacing Obamacare

If there was one thing Donald Trump was going to do were he elected president, it was to repeal and replace Obamacare. This has been a goal of the GOP since the day the Affordable Care Act became law, and with a Republican majority in both the House and the Senate under Trump, many assumed it would be one of the first pieces of legislation from the Obama administration to go, replaced with something else.Unfortunately -- as John Oliver explained on Last Week Tonight -- the GOP's r