FISA works both ways.

BOOM!

https://theconservativetreehouse.com/2019/02/11/fibbers-all-of-them-dems-claim-will-not-take-corporate-pac-money-for-2020-election/#more-159892

A candidate earning $170,000 a year doesn’t become a millionaire without taking corporate donations. The process they use is quite simple. They establish leadership PAC’s. Setting up the leadership PAC is one of the first steps any politician takes after winning office.

Alexandria Occasio Cortez aka “AOC” started her “leadership PAC”: “Courage to Change”, less than three weeks after winning her congressional seat. Once the leadership pac is formed, the politician can then legally accept the contributions that flow from corporations that are lobbying the representative to vote for their legislation. [AOC PAC here]

https://www.fec.gov/data/committee/C00692202/?cycle=2018&tab=about-committee

https://en.wikipedia.org/wiki/Frank_Llewellyn

Frank Llewellyn is the former National Director of the Democratic Socialists of America (DSA), which is the largest U.S. organization advocating democratic socialism.