"It’s a shame that Biden had to back down from the initial 28% because of domestic opposition." You are misrepresenting the situation. A 28% global minimum was

"It’s a shame that Biden had to back down from the initial 28% because of domestic opposition." You are misrepresenting the situation. A 28% global minimum was never on the table. 28% was Biden's proposed domestic rate (which to your point, he is backing down from). But these are two separate rates so we should be clear what we are discussing here.