Is it wrong to speculate? It's wrong not to speculate.
From Think Progress:
Last week, Politico asked the 11 House Republicans co-sponsoring the so-called “birther bill” — legislation requiring presidential candidates to prove they were born in the United States — to provide their own birth certificates. While a number of them complied, Rep. Randy Neugebauer (R-TX) explicitly refused to show his proof of birth.
Hm. "Neugebauer" . . . does that sound foreign to you?