Re: You don't understand how it works
A US Senator's salary is 174,000. Majority Leader and other posts make more. Nobody is getting rich off that. They are also allowed million(s) in some cases, for staff, office expenses and whatever else they can make look official. But skimming that money for personal use would be frowned upon. They are also limited to 15% of their salary in outside earned income.
WSJ showed that most Senators are already millionaires before they are elected. Bernie Sanders is not that wealthy, most of his net worth is tied up in home equity and his recent 6 or 7 figure book deal.