This question seems muddled. It combines two diverse unconnected groups and then connects them with a cause/action affecting two other diverse unconnected groups.
Significant investments is not the same at all as government subsidies. Investment is money or resources given with the understanding that more money or resources would be returned within a given time frame. A subsidy is money or resource given often to relive some burden for the interstate's of the social good.
Likewise union members, while also being US taxpayers does not mean that all US taxpayers are union members. A union member is someone within a specific trade who pays for the benefits of having the circumstances of his employment negotiated by an elected member of his union. Only 12% of those employed in the U.S. hold a job eligible for union representation.
The question is deeply flawed and makes not sense as written.