New Delhi, March 23 -- President Donald Trump on Sunday said his fellow Republicans should not reach an agreement on funding the Department of Homeland Security until Democrats in Congress approve a bill that requires people registering to vote to provide proof of U.S. citizenship.

In a post on social media, Trump said congressional Republicans should not make "any deal" with Democrats until they agree to pass the voter bill known as the Save America Act. Trump pointed to Democratic lawmakers' demands related to a dispute over DHS funding that has left the agency unfunded since February 13.

The lack of funds has meant tens of thousands of Transportation Security Administration personnel have worked without pay for five weeks, leading so...