I've been thinking, when I younger and living in the UK, all sorts of things (including some with the word "tax" in them) were denounced by the local right wing as "stealth taxes".
Trump is talking about tariffs as if they're a tax on non-Americans, but they're paid for by Americans who import stuff, which is basically all Americans given where your oil, aluminium, and steel come from.
Those tariffs are a stealth tax.