Think about what people like Biden have apparently been doing to the American people. Using their political positions, they take the American taxpayers money and use it to leverage more political and monetary power for themselves. They make dirty deals and fill their OWN pockets with graft, while they pick OUR pockets and we foot the bill.
Don't forget, that IF they did sue, it would lead to people investigating and poking around, which is the LAST thing they want.