I think Trump thinks that we should be paying him rent for having US Forces stationed in Europe - ROFL
Trump told defense secretary Mattis to become Nato's rent collector, new Bob Woodward book claims - Daily Mail
Meanwhile in the real world.
In terms of the UK the US is actually upgrading some of it's facilities, most notable Lakenheath, which will be open to new F-35's, Fairford which will be home to the 95th Reconnaissance Squadron with their Rivert Joint Reconnaissance Aircraft and the 488th Intelligence Squadron.
RAF Fairford:Written question - 112003 - UK Parliament
RAF Lakenheath Gets $150 Million Of Investment For F-35A
The US Intelligence facility at Croughton is to receive a $200 million upgrade.
Pentagon to open major £200m intelligence centre in Britain - The Independent
Whilst the US Navy is building a new sub hunting faciluty ar RAF Lossiemouth in Scotland, where US and RAF P-8 Poseiden Aircraft will work together in order to hunt Russian Submarines in what is known as the Northern Gap.
Funds allocated for US to base P-8 Poseidon aircraft in Scotland alongside British Aircraft