The American system is basically set up to be paralyzed. FPTP voting leads to two parties, voting for both an executive president and two legislative leaders leads to no single popular outcome, and the Senate exists to stop anyone from doing anything.
Having Mitch be majority leader makes it worse, but you can't solve it by getting rid of him. He's not blocking things because he feels like it; it's his job.
Having Mitch be majority leader makes it worse, but you can't solve it by getting rid of him. He's not blocking things because he feels like it; it's his job.