<Li> 55% of Americans believed that labor unions will become weaker in the United States as time goes by, an all - time high . This compared to 22% who said their power would stay the same, and 20% who said they would get stronger . </Li> <Li> The majority of Republicans and Independents believed labor unions would further weaken by a 58% and 57% percentage margin respectively . A plurality of Democrats believed the same, at 46% . </Li> <Li> 42% of Americans want labor unions to have less influence, tied for the all - time high set in 2009 . 30% wanted more influence and 25% wanted the same amount of influence . </Li> <Li> The majority of Republicans wanted labor unions to have less influence, at 69% . </Li>

1. discuss the historical evolution of labor unions in the united states