He is not a member but yes, he spoke twice and offended Klaus the last time by torching the climate change farce BS. DJT and the WEF are not friends.
Trump EO’d the WEF’s 1 million Tree’s initiative and set up an interagency council for it.
https://trumpwhitehouse.archives.gov/articles/president-trump-signs-one-trillion-trees-executive-order-promoting-conservation-regeneration-nations-forests/
You’ll need to click and read to see where he stated it’s the WEF. He also supports and signed bill for funding of solar geoengineering. Nearly every EO from Ai, 5G, big pharma, Tele-Health, et al are all WEF agenda.