I'm not from the US, but I don't even understand the basic premise. If these companies avoid paying taxes by not being registered/incorporated in the US, how could they possibly be eligible for help from the US government? That just seems like a contradiction, like a huge case of having your cake and eating it.
Carnival Cruises is headquartered in Miami. They register their ships in other countries for various reasons. One of which is taxes. But the company itself is based in the US.
Carnival Corp and Norwegian both posted negative income tax expenses — that is, they received more in refunds or deductions than they paid or set aside for taxes — with Carnival reporting an income tax expense of $71 million and Norwegian reporting an $18.9 million tax benefit.
They don’t contribute to the public fisc in good times, they should have no call on it when times are tough.