In 2014, Trudeau removed all Liberal senators from the Liberal Party caucus. In announcing this, Trudeau said the purpose of the unelected upper chamber is to act as a check on the power of the prime minister, but the party structure interferes with that purpose. Following this move, Liberal senators chose to keep the designation "Liberal" and sit together as a caucus, albeit not one supported by the Liberal Party of Canada. This independent group continued to refer to itself in publications as the Senate Liberal Caucus until 2019.