A large percentage of U.S. corporate ownership is held by foreign taxpayers that would not be subject to U.S. taxation on dividends or capital gains absent a fairly large and radical change in tax law, including breaking more than a hundred tax treaties.

It's much easier to simply impose an AMT and eliminate a relative handful of expense shifting mechanisms (many of which are already covered by a regime known as "transfer pricing").

This sounds like a good idea for the current, somewhat dystopian world we're living in, but have you ever thought about whether huge corporations are even a net positive in the first place?

I think that even if taxing corporations doesn't make sense in terms of tax revenue, it makes sense in terms of stopping companies from growing too large

Imo corp tax should be nil until you get to about 1m profit, and then brutally progressive after that. Small businesses are great, and companies that benefit the consumer by being large can be public-owned and both compete internally and internationally.