Many of Trump's supporters have argued that President Trump has the authority from the National Emergencies Act of 1976.
President Trump's emergency declaration gives him $8 billion from various government agencies to build a barrier on the U.S.-Mexico border. Democrats don't believe the illegal immigration crisis at the border merits a national emergency, so on Tuesday they plan to introduce a new measure to stop Trump's declaration.
Sen. Lisa Murkowski (R-AK) is one of a handful of Republicans who intends to vote with the Democrats.
"I want to make sure that the resolution of disapproval is exactly what I think it is, because if it is as I understand it to be, I will likely be supporting the resolution to disapprove of the action," the senator revealed Monday.
She joins her usual partner-in-crime, Sen. Susan Collins (R-ME), who was the first Republican senator to announce she'd vote for the measure to condemn Trump's emergency.