I have definitely had to pay tariffs on goods I have ordered from the UK. They arrive as a separate bill, and with the threat that if I don't pay them in within a certain time (usually a week) that the good will be returned to the seller.
US Tariffs only hurt US citizens. Anything else is simply the stuttering of a simpleton.
Even if it isn't as clearly separately billed - the market works the way it does and that cost is going to be passed onto the consumer unless the seller just decides to eat the cost (and I am aware of several small businesses that are eating the costs to try and avoid any PR backlash with the hope that this is a temporary situation).
And if the tariffs are ruled invalid you're free to speculate whether target is going to send you a check for what you effectively paid or just pocket the difference.
US Tariffs only hurt US citizens. Anything else is simply the stuttering of a simpleton.