even the crazy libertarians

Right-libertarians would generally be some of the people most-opposed to barriers to trade. They'd be on the low-barrier end of the political spectrum.

Both Cato and Reason had some articles up, which I linked to earlier, complaining about how tariffs didn't make any economic sense. I thought that it was notable, because Trump was doing a lot of government-size cutting

something that one would expect them to possibly be happy about him, since they'd be the main cheerleaders for a small government

but instead both were just full of attack articles on him, angry about a number of his policies, and especially tariffs.

goes to investigate

It looks like now Reason has created a static "tariffs" section on their front page. The featured items are:

• Trump Loves Tariffs. Fentanyl Is Just an Excuse.

• In Speech to Congress, Trump Promises More Tariff Madness

• Trump's Dramatic Crossroads Between Protectionism and Dynamism

• Tariffs Are In Effect. Expect Everything To Become More Expensive.

Cato doesn't have a tariff section, but of their most-recent four blog items, three are complaining about Trump on tariffs:

• Freedom, Not Tariff, Is the Most Beautiful Word in the Dictionary

• The Drug War Is Failing, So Let’s Try… Tariffs?

• Trump’s Tariff Walkback Bows to Economic Reality but Leaves Plenty of Problems