As a loony liberal, I applaud you for this.
A few comments:
"If you are the only adult in your household, you’ll get $12,000 a year. But if you get married, your household will get $24,000 a year.. Conservatives who value marriage should prefer UBI to traditional welfare."
Two unmarried people would also have two UBI checks and a poly group might have a basketful. That would be acceptable to me, but perhaps not to your fellow conservatives?
"It seems to me that if we adopted UBI, it would be like Medicare: Here to stay. What sort of politician could oppose taking away people’s checks and hope to get elected?"
But earlier you said, “Don’t ever enact a government program unless you can foresee the consequences.”
This is why we should sunset *every* law/policy and index every act for inflation. Nobody has to take away the candy, it just disappears.
"If we’re giving payments to every adult citizen, then the issue of who we let in to the country and what the path to citizenship looks like become more pressing and more costly to get wrong."
I'm no fan of borders at all, but doesn't "us and them" seem a bit anti-American? But never mind that: who do we want to "let in'? Shouldn't they all be people we want? If they are desirable, useful, necessary, pitiable or whatever, shouldn't that make them equally entitled to the American Dream?
"That leaves two undesirable options: raising taxes and printing money. "
Or getting tougher about how we spend/waste/invest in corporate welfare? Really, should Apple, Amazon, and the rest of the alphabet pay so little in corporate tax? Do they need our financial assistance?