Do tourists pay the new tariffs?

Do tourists pay the new tariffs?

They could face higher duties
https://berardiimmigrationlaw.com/how-new-u-s-tariffs-will-impact-travelers-and-businesses/

From the article:

Effects on Travelers
For now, personal duty-free exemptions remain unchanged, meaning most travelers will not experience additional costs when bringing
goods back from Canada. The personal duty-free exemption of up to $800
per traveler for personal or household use remains in effect.
Purchases made at duty-free shops continue to qualify under this
exemption.

No change.

If a traveler exceeds the $800 limit, duties may apply to the excess
amount. Standard duty rates, which could now include the new tariffs,
will apply to goods exceeding the exemption threshold.

"may apply" and "could now" which means that the author doesnt know, and I suspect he would know if people had been charged the tarrifs. So I am going to guess, no.

For most travelers staying within the duty-free allowance, the new
tariffs should have no direct impact.

Again, no problem

However, those making large purchases should be aware that certain
tariff-affected goods may face higher duties beyond the exemption
limit.

Again "may face" doesnt mean will face or have faced.

I suspect that if you choose to have your "substantial purchase” shipped home directly, the additional tax/duty/tariff you will have to pay will be determined by the customs form filled out by the seller/shipper. That has always been the case.

Depends on what you are importing into the US.

https://www.cbp.gov/travel/international-visitors/know-before-you-visit/customs-duty-information

It is a situation or issue that does not affect my way of traveling.

You should be fine. Tariffs usually affect commercial goods--goods brought in for resale. The personal allowance, as of now, has not changed.