> The argument "we're $35 trillion in debt so it's not a big deal to add 0.01% to it"
This is not the argument. The argument is more along the lines that our leadership just weeks ago rallied around a sharp increase in the rate of our debt accretion, so obviously erasing the debt is not a political priority at this time.
Given that erasing the debt is not a political priority, good stewardship demands that deficit spending should align with uses that will generate positive long-term financial returns to Americans (e.g. cancer research) instead of negative returns (deporting agricultural and construction workforces).
Making cuts that will have the effect of slowing the long-run growth rate of the US economy and its overall competitiveness will also make it harder to erase the debt should that ever become a political priority.
U.S. can't afford $18 billion of non-essential spending. It can't afford $1 billion of non-essential spending. In fact, it can't afford $1 of non-essential spending.
The argument "we're $35 trillion in debt so it's not a big deal to add 0.01% to it" is just incomprehensible to me.
And it's not just UN. It's $47 billion to USAID, $9 billion to NPR, $10 billion to California's "never gonna happen" rail, $1.3 billion to Harvard and that's just a small part of spending.
US government still needs to go on a serious spending diet. But every cut gets people to catastrophize how the world will end if US doesn't fund UN or Harvard.