There is NOTHING more conservative than stopping a permanent democrat/marxist voting majority and doing what is best for the people and the country. By virtue of Mr. Trumps position on illegal immigration he Trumps all others conservatism.
It's too bad about Rubio's position on the Gang of 8, because one of the things that is killing Europe is the declining birthrate among native Europeans. That's a big reason why their elites support immigration. Rubio's tax plan, by focusing heavily on child tax credits, actually encourages larger families.