"The idea is to cut down on fraud"
politicians always make things sound better than they are. if a bill was being discussed that enabled the murder of five year-olds, they'd add a nice touch and say "it's to prevent overpopulation" when it would actually be to prevent the five year-olds reaching the age of 18 and voting them out with new ideas.
likewise, texan politicans want people from rural counties to vote while making rules forcing people from houston, austin, dallas, el paso, or san antonio to be silent