Let's get one thing straight.

It's not foreign aide.

It's money laundering.

Ukraine is like Saul Goodman's Nail Salon from Breaking Bad. Congress sends the taxpayer dollars to Ukraine, layer it as foreign aide on the Ukrainian books, then bring it back onto their books via donations to political foundations like the Clinton Foundation.

It's not hard to understand what they're doing.

Breaking Bad does an excellent job of explaining how this crime is committed.