A majority of Americans ― 55 percent ― disapprove of President Donald Trump’s decision to declare a national emergency along the U.S.-Mexico border in order to pay for construction of a border wall, a new HuffPost/YouGov survey finds. Just 37 percent approve.

The emergency declaration is significantly more unpopular in the poll than building the wall itself, of which 49 percent disapprove and 45 percent approve. (Earlier polling from other outlets has found higher levels of opposition both to construction of the wall and to the idea of declaring a national emergency to fund it.)

Half of Americans say that Trump’s decision to declare a national emergency is unprecedented, while 29 percent consider it similar to actions taken by past presidents. Trump’s recent predecessors in the Oval Office collectively declared dozens of national emergencies, but most concerned sanctions against other countries and none were intended to overrule Congress on a spending decision.

Opinions on Trump’s declaration of a national emergency are starkly divided along political lines, with the president’s supporters overwhelmingly in favor and those who supported Hillary Clinton in 2016 almost universally opposed.