How does AOC go from being a Bar tender to a Millionaire.

Wildwood Crest - How does AOC go from being a Bar tender to a Millionaire. How does Obama go from a Job at $500,000 a year to buying a mansion on Martha's Vineyard that NOBODY can access. and having a net worth of over 70 million dollars?
I looked at every Democrats worth in the Senate, every one of those people are Multi Millionaires on a $175.000 a year job. Maxine Waters is the WORST! Amazing isn't it...