Trump had previously tweeted about the F-35 program and its exorbitant costs.
During a visit to MacDill AFB in 2017, Trump made a variety of claims. Among them, like how “our Navy is at a point almost as low as World War One – that’s a long time ago, that’s a long time ago,” Trump also claimed “I saved over $700 million when I got involved in the negotiation on the F-35.”
Politico – How Trump got credit for slashing price of fighter jet when he didn’t
Politifact – Trump overstates credit for $700 million in savings for F-35s
Impact 2020 – Trump’s boasts aside, here’s the real reason those F-35s wound up costing less