The first lesson of economics is scarcity: there is never enough of anything to fully satisfy all those who want it. The first lesson of politics is to disregard the first lesson of economics.
Tariffs that save jobs in the steel industry mean higher steel prices, which in turn means fewer sales of American steel products around the world and losses of far more jobs than are saved.
One of the common failings among honorable people is a failure to appreciate how thoroughly dishonorable some other people can be, and how dangerous it is to trust them.
Stopping illegal immigration would mean that wages would have to rise to a level where Americans would want the jobs currently taken by illegal aliens.
People who identify themselves as conservatives donate money to charity more often than people who identify themselves as liberals. They donate more money and a higher percentage of their incomes.
The most fundamental fact about the ideas of the political left is that they do not work. Therefore we should not be surprised to find the left concentrated in institutions where ideas do not have to work in order to survive.