The U.S. Supreme Court on Friday issued a major decision scaling back the power of federal judges to block presidential policies nationwide, in what is considered a major win for the Trump administration’s efforts to end birthright citizenship for children born in the U.

The ruling clears a major hurdle to President Trump’s agenda and could reshape American citizenship, at least temporarily, as lower court challenges proceed.

While babies born in Washington and a slate of other blue states will continue to automatically qualify for American citizenship, that right is “tenuous” for those in red states that have not challenged President Donald Trump’s attempt to end the practice ,