@fresh_42 To clarify - as one may wonder 'how then do things proceed at all?'
Congress ends up using a two-step workaround to the gridlock.
Step 1 is to pass what is called a "continuing resolution" instead of a budget. This makes it legal to continue spending at current levels.
Step 2, which doesn't happen every year, is to pass a budget for the current year very late in the year, which is basically a tally of what has been spent so far and money for most or all or more of would have been spent for the rest of the year given a continuing resolution. In the years when this second step doesn't happen, its continuing resolutions all the way to the next calendar year.
IMO, its that way because the only way to survive politically is to pass a bill when everyone agrees that any bill is better than a shutdown, and of course this only happens when a shutdown is imminent and the only thing that can pass even in these conditions is basically "status quo".
Reference for my next statement -
Only a small number of congressional races are considered toss-ups going into November. Most are in districts drawn by independent commissions or courts.
www.brennancenter.org
In 2024, out of 435 House of Representative seat elections, 27 were considered "in play". The rest were not going to flip. That means almost all congresspeople are running against others in their own party in what is called the 'primary' election - this is an election before the main election where each party selects the candidate that will be on the ballot. This is the only meaningful election for almost all members of the House. Senate races are statewide, and are as competitive as the state in which they are held, so not as polarized, but definitely getting more so as American states become more single party dominated. So there dis-incentive to work across the aisle and seek compromise. If you do so, its likely that more extreme members of your party will run against you in the next election (this is called "being primaried") and you will lose your seat to a more extreme member of your own party.
Our system is really in an unhealthy equilibrium point (extreme polarization). I wonder if European parliamentary systems are more self-correcting against this kind of bad sticking point than our US system is.