GRAND RAPIDS, Mich. — U.S. Transportation Secretary Pete Buttigieg said Monday the family connections of his husband, Chasten, helped inspire their decision to officially become Michiganians. Buttigieg, who first found the national political spotlight as South Bend’s mayor in Indiana, has moved to Traverse City, Chasten’s hometown. Buttigieg plans to register to vote there before the midterm election this fall, a U.S. Department of Transportation spokesperson revealed last week. “When I married Chasten, I married into Michigan at some level to begin with,” Buttigieg said Monday. “But it was re…