The presence of a major ideological movement in the United States of America dedicated to the dual propositions that taxes must never go up, and that government expenditures don’t need to relate to government revenue in any real way as long as the Republican Party is in charge simply makes it almost impossible for the country to be governed in a responsible manner.
If we had a different political system, it’s possible that such an ideological movement would marginalize itself, lose elections, and the other guys would run the show responsibly. Maybe. You could at least imagine it happening.
But in our system even a defeated minority gets a ton of influence over policy and becoming completely dogmatic and irrational actually enhances that level of influence.
The Epitaph of Economic Jingoism: