The Trump administration is escalating its attacks on election officials in key battleground states, with Homeland Security Secretary Markwayne Mullin doubling down Friday on claims that hundreds of thousands of non-citizens are illegally registered to vote – claims that the agency has quietly acknowledged aren’t fully vetted.

Mullin insisted the Department of Homeland Security found 250,000 noncitizens registered to vote

Homeland Security Secretary Markwayne Mullin pledged to aggressively pursue voter fraud cases at the White House complex after President Donald Trump revived debunked election…