This week saw President Donald Trump declare a "Liberation Day" in which he hiked tariffs on goods produced by multiple foreign countries, including Canada.

The move has been controversial, with even some Republican senators going rogue by supporting a resolution opposing it. 

Mitch McConnell says focus should be on China

According to Breitbart, Kentucky Sen. Mitch McConnell, Alaska Sen. Lisa Murkowski, Kentucky Sen. Rand Paul, and Maine Sen. Susan Collins helped Democrats to pass the measure on Wednesday.

🚨🚨 Senate approves plan to reverse Trump tariffs on Canada pic.twitter.com/bifbrJTaII

— Jamie Dupree (@jamiedupree) April 2, 2025

The Hill pointed out that while the resolution is not binding, it does voice disagreement with Trump's decision to tariff Canadian imports by 25%.

Collins explained her vote by telling reporters, "In general, one of my biggest concerns is: We should be distinguishing between allies and our adversaries and not treating them the same way."

McConnell offered a similar rationale in a statement, saying, "With so much at stake globally, the last thing we need is to pick fights with the very friends with whom we should be working with to protect against China’s predatory and unfair trade practices."

Senate majority leader: "An aggressive response" to fentanyl is needed

However, The Hill reported that Senate Majority Leader John Thune (R-SD) stood on the Senate floor and argued for "an aggressive response" to the smuggling of illegal drugs.

"I urge my colleagues to oppose this resolution and ensure that President Trump has the tools that he needs to combat the flow of fentanyl from all directions," he asserted.

For his part, the president responded with a Truth Social post in which he called out the four Republican lawmakers by name.

"Mitch McConnell of Kentucky, Susan Collins of Maine, Lisa Murkowski of Alaska, and Rand Paul, also of Kentucky, will hopefully get on the Republican bandwagon, for a change, and fight the Democrats wild and flagrant push to not penalize Canada for the sale, into our Country, of large amounts of Fentanyl, by Tariffing the value of this horrible and deadly drug in order to make it more costly to distribute and buy."

Collins warns of "detrimental impact" on her state's economy

During debate over the resolution, Collins argued that increased tariffs "have a detrimental impact on the economy of Maine and on border communities in particular."

"We have, for example, a major paper mill in northern Maine right on the border that gets its pulp from Canada," The Hill quoted her as saying.

"I’ve talked to the owner of that mill — the imposition of a 25-percent tariff could be devastating," the Republican senator claimed.