The Senate confirmed Gov. Kristi Noem (R-SD) as the next Secretary of the Department of Homeland Security on Sunday during a weekend vote, as Republicans overcame efforts by Democrats to delay the process by using procedural hurdles.

The role is key to Trump’s plans for his second term after pledging to deport millions of undocumented immigrants and impose a crackdown at the southern border.

The former U.S. congresswoman was chosen by the president-elect to lead the department responsible for key immigration and border-related actions.