The same way we have with past presidential candidates.
You really have run out of arguments. Either be creative or just admit you don't care about the constitutional requirements and you'll just let any foreign born popular person run because no one asked Eisenhower ot JFK or Nixon where they were born. Then you can announce your president on the people's choice award.
Anybody seen a birth certificate? Anyone? Nobody? Oh, I guess he's okay then.
Please send me a check for $100. I am erecting a plaque at his birthplace in Honiolulu as soon as we find out where it is.