States should take a closer look at their election laws to protect against fraud in mail-in voting, Iowa Republican U.S. Sen. Chuck Grassley said Wednesday.Grassley was asked during his weekly conference call with Iowa reporters about an Iowa bill that would shorten early voting, close polls earlier on Election Day and establish stricter standards for absentee ballots, among many other provisions.“In the 50 states, or at least in some of the 50 states, I think state legislatures ought to be working on laws that will enhance the protection for mail-in ballots the same as what we have protection for voting in person,” Grassley told reporters Wednesday.