The only question remaining here is why just 50%?
If they want to play make them pay.
If not they can keep their spies/diplomats in their own country.
The U.N. has not shown itself to be a particularly good agency at doing anything that falls in line with their mission statement.(Source)
The Hill by Mark Hensch
President Trump’s administration has told the State Department to cut more than 50 percent of U.S. funding to United Nations programs, Foreign Policy reported.
The push for the drastic reductions comes as the White House is scheduled to release its 2018 topline budget proposal Thursday, which is expected to include a 37 percent cut to the State Department and U.S. Agency for International Development budgets.
It’s not clear if Trump’s budget plan, from the Office of Management and Budget, would reflect the full extent of Trump’s proposed cuts to the U.N[…]