When costs exceed return, that's a negative impact on GDP.  You don't increase GDP by burning $100 bills.  Likewise, when you transfer wealth for social programs, which don't "produce" anything, while fewer people are paying into the system, you have declining economic growth, which is epidemic in every Progressive country on the planet.  Most of the EU and the Scandanavian countries are either in Recession, or hanging precariously above it at 1% growth or less.  Same problem everywhere:  Aging populations, fewer people paying in, more people taking out, and slowing economic growth.  It's unsustainable and the EU knows it, which is what it opened the flood gates to Muslim immigration because the tend to be young and their birthrate is high.  What they didn't count on is Muslims rejecting their culture and refusing to assimilate.  The EU will be dead before the end of Trump's first term.