Maine and Texas are the latest states to become involved in a nationwide Republican push to enact strict voter ID laws and highlight the rare problem of noncitizen voting, with voters set to decide ballot measures on those issues Tuesday. The proposal in Texas, where Republicans control the government, is fairly simple: It would amend the Texas Constitution to add “persons who are not citizens of the United States” to the list of those excluded from participating in elections. Maine’s proposal centers on requiring a photo ID to vote, but it is far more sweeping.