Washington, March 25 (IANS) President Donald Trump on Tuesday swore in Senator Markwayne Mullin as the new Secretary of Homeland Security, calling him a “great American patriot” and vowing tougher action on illegal immigration and border security. Three Democratic senators have made a request to the President Donald Trump. Senators Tammy Baldwin, Chuck Schumer, and Elissa Slotkin called on Trump to stop Chinese automakers from undercutting American workers and putting national security at risk. They also called on the President to crack down on the manufacture, sale, or operation of these companies and their vehicles on the US soil. The…