REDFORD TOWNSHIP, Mich. (AP) — The International Association of Firefighters has declined to endorse Vice President Kamala Harris, meaning her trip to Michigan on Friday came without the national group’s official backing. Harris and Donald Trump are trying to get the upper hand with working-class voters in the closing weeks of the presidential campaign. Harris visited a firehouse outside Detroit. Organized labor has been a bedrock of Democratic support, but Trump is eager to make inroads with unions in the election and visited Michigan on Thursday. He appeared Friday in Georgia with Gov. Brian Kemp and near a military base in North Carolina.