White House Contact Page:
https://www.whitehouse.gov/contact#page
How to write or call the White House:
https://www.whitehouse.gov/contact/write-or-call
If he's able to be emailed or faxed from the public, the WH Switchboard ought to have that info.
Of course I'm sure they will fetch him for a WNist cause immediately, lol. I do think, however, that there is a possibility of someting happening re certain types of political prisoners with this Administration that wasn't possible before.