president says votes of non-citizens cancel out votes of lawful American citizens - something evidence suggests happens almost never
Trump has been listening to Kansas Secretary of State Kris Kobach; this is one of his old arguments.
Unfortunately at this time, Kobach is under investigation by the Kansas Supreme Court's Office of Disciplinary Administration after a complaint was filed by a Kansas college student, who alleges that Kobach has a lack of respect for the courts--leading to ethical questions about his behavior as an attorney.
Kobach was fined $1,000 in US Magistrate Court last month because of "deceptive conduct and lack of candor" concerning a document--that Kobach was photographed carrying into a meeting with Donald Trump-- reportedly about proposed changes in the federal voting law.
Kobach denied he had any such document, after the ACLU took him to the court to obtain the alleged document.
In addition to being Kansas Secretary of State, Kobach is currently the Vice-Chair of the Presidential Advisory Commission on Election Integrity. Also, he is an announced candidate for Kansas Governor on the Republican ticket.
Source: The Kansas City Star, 7/17/17