All the folks cheering on Canada as they want to have it both ways?

Canada had protective tariffs to prop up home industries that would be hurt or eliminated. Remember, Canadians were paying a higher price for milk and steel as part of the prop, so Canadians were both hurt and helped by those tariffs. Canadians will tell you that being next to the US is like living with a giant. Any small move we make has big ramifications.

"Modern USA Protective Tariffs (This means the USA does it too.)

Steel and Aluminum Tariffs (2018–Present):
Imposed under national security justifications to penalize cheap foreign metal imports and revive domestic foundry production.

Section 301 Chinese Imports (2018–2025/2026):
Broad tariffs directed at Chinese technology, manufacturing components, and consumer products to counteract trade deficits and industrial practices.

Global Auto and Copper Surcharges:
Sector-specific duties placed on foreign automobiles, parts, and raw copper to shelter domestic assembly plants and material suppliers from cheaper overseas alternatives.

OH LOOK! A #$@&^ QUOTA TARIFF!
"U.S. sugarcane and sweetener policy relies on a dual system of Tariff-Rate Quotas (TRQs) and fixed high-tier (Tier 2) over-quota tariffs managed by the USDA Foreign Agricultural Service. While in-quota sugar enters under low duties, domestic growers face severe market pressures from record sugar stocks because over-quota tariffs set in the year 2000 are no longer prohibitive against cheap global surpluses."

More quota tariffs:

Dairy Products:
Imports of specific cheeses, milk, and butter to insulate the domestic dairy industry.

Textiles and Apparel (Multifiber Arrangement):
From 1974 through 1994,the Multifiber Arrangement (MFA), which limited the volume of cotton, wool, and synthetic garments developing nations could export to the U.S. before it was phased out in 2005.

Peanuts and Peanut Butter:
Subject to strict quantitative import ceilings and tariff-rate quotas managed via federal licensing to protect domestic agricultural support programs.

Beef and Veal:
Historically regulated by counter-cyclical meat import laws and voluntary restraint agreements with major cattle-producing exporters like Australia and New Zealand to safeguard domestic ranchers.