The point is, voter fraud occurs and if we can make administrative procedural changes to reduce or eliminate it we should.  It isn't a hard concept to grasp unless of course one doesn't want make any changes or one just wants to rant about president Trump.  Below is a source you should find more acceptable without getting upset:

"Ohio Secretary of State Jon Husted (R) has announced that his office has conducted an exhaustive review of the voting records in Ohio and that 821 non-citizens were illegally registered to vote in the Buckeye State. However, according to voting records, only 126 of those non-citizens have actually cast a vote in the three most recent elections, including a total of 82 who voted in 2016 elections in Ohio."
http://www.theblaze.com/news/2017/02/27/ohio-secretary-of-state-concludes-investigation-heres-how-many-non-citizen-votes-were-cast-in-2016/