Louisiana Secretary of State Nancy Landry said checking voter rolls is crucial to election integrity. (Photo Courtesy of Louisiana Public Broadcasting) BATON ROUGE — Louisiana Secretary of State Nancy Landry said a federal data program that verifies citizenship status uncovered the 403 noncitizens registered to vote in Louisiana out of a total voting pool of 2.96 million, with 83 having voted in at least one election since the 1980s.   The state used the federal Systematic Alien Verification...