Brexit is a good example. I think many people just can't extrapolate/predict the results of their actions and understand the policy (assuming politicians are even honest about it in the first place). For most objective smart people Brexit seemed terrible (hey lemme reinforce my ego a little) but expecting your average person to be able to understand that is tough. Also there is a parallel universe somewhere where Brexit maybe has a positive outcome. These things aren't fully deterministic. Similarly people always seem to buy the immigration crime and jobs schtick. And it's also not false that if you open your borders to a stream of people it is likely to change what your country looks like. There's a reason most countries don't have completely open borders and give everyone citizenship the day they set their foot past the border.

What's so bad in America? You'll be surprised how many people have hard lives in America. A lot. And I think when it's bad there, it's really bad.