Rep. Justin Amash, R-Mich., on Friday emerged as the only House Republican to support Democratic-led efforts to block President Trump’s border emergency.

Rep. Joaquin Castro, D-Texas, introduced a joint resolution Friday that would overturn Trump’s national emergency declaration, which he is using to divert resources away from the Department of Defense and toward his southern border wall project. Amash was the only GOP lawmaker to tack his name to the measure, along with 226 House Democrats.