Realize immigration as vital to continuing US population growth, and US technological growth
Use Taxes as a form of income for the government
Differences:
Republican party favors controlled Immigration vs Democratic party perfers open immigration
Republican party favors fewer taxes on the wealthy, and a flat tax rate, while the Democratic party advocates for higher taxes for richer citizens, and a dynamic tax rate.
These are just 2 examples, but this should help you get more.
