Four Republican senators collaborated with Democrats to issue a rare bipartisan criticism of President Donald Trump regarding his trade policies.

The Senate approved a resolution with a vote of 51 to 48, aimed at preventing the Trump administration from implementing proposed tariffs on imports from Canada. The four Republicans who sided with the Democrats included Senators Rand Paul, who co-sponsored the resolution, along with Susan Collins, Mitch McConnell, and Lisa Murkowski, as reported by CNN.

This action signifies an uncommon instance of bipartisan dissent against Trump within the Republican-controlled Senate, particularly following Trump’s remarks urging Republicans to oppose the resolution, according to the outlet.

The significance of the Senate’s vote may be largely symbolic, as House Republican leaders are not anticipated to take any steps to challenge Trump’s tariff policy and had previously attempted to obstruct such actions earlier this year. Nevertheless, some House Democrats believe they may have discovered a method to circumvent GOP leadership regarding tariff issues, CNN reported.