Not completely without merit:
We don’t have a national sales tax today. That would have to be legislated first.
Once that camel’s nose is in the tent, all bets are off.
Oh we do, it's not obvious to most people. It's called tariffs - it's a tax on product purchased and imported into the US. Of course, it's paid for by the importer/company directly, so it's indirectly paid for by the consumer.