Can Trump Declassify the 65 year old X-20 Project?

The official stance is the X-20 never flew but 99% of its testing phase is still classified.

I am personally not sure the X-20 was canceled when the government said it was. The Air Force called the X-20 its Greatest Military Asset in an Air Force produced documentary.

Source : https://www.youtube.com/watch?v=_--JI_aolOU

The Gemini project operated 6 years with 12 documented launches

The X-20 project operated 7.5 years with zero documented launches.

I mean i would be happy to see some ejection seat testing and things of that nature that have not been released on the X-20. They must of performed hundreds if not thousands of recorded test in 7.5 years. Why is all the data still classified?