Okay, how about first we stop spending money in other countries? Bring our soldiers home and let them guard our own borders?
The total bill for foreign aid is probably $50B. That is honestly nothing. Some of it ends up getting spent here anyway as countries buy American goods and services. Some of it buys us influence around the world.
Having soldiers guard our borders would probably run afoul of the Posse Comitatus Act.
But other than being wrong and misguided those are great ideas.