Earlier quoted context omitted.
The Senate is an incredibly un-democratic institution and a truly massive barrier standing in the way of a functioning government. Mitch McConnell alone can dictate Senate business at his whims.
It is democratic, just not the sort one might expect. It’s a democracy of the states. That’s by design. The House is an approximate democracy of the people in the states (with some weighting so that the most populous states don’t have a complete monopoly) and the senate is a democracy of the states. Together they form an approximate republic of the country’s opinion... in an ideal world.
One person shouldn't be able to unilaterally decide what will and won't be voted on, and shouldn't be able to tell half of the senate how they'll be voting if they want access to re-election funds.
I don't know what the solution is, or who could implement one. But it's really hard to look at the last decade or two and claim that the senate is working as intended.