I really wish both Politicians and people in general would read their history.  We have been down this road of setting up tariff barrier and also devaluing our currency in the 1930's.

It didn't work then - all that happens is that other countries then raise tariffs on your goods that they import and it goes on.  Additionally we now have the WTO - if you only selectively apply a tariff to punish a company that doesn't move production to the US then that is an unfair barrier to trade and both the company targeted and the country will be filing suits.  In the end they don't have justification for the tariff being so targeted.

Know they are free to pull out of trade agreements but with some exceptions most tariffs are already low  - in Canada they seem to average 6% which is not much when you look at the costs of labour.  You can raise these but not everyone is going to move manufacturing - there will be goods that disappear from the market