The problem with a loaded question is that one may use it even without a hint of circumstantial evidence to back it up.
"Is Obama still a Muslim?"
"If he didn't write any papers, why did he conceal them?"
"If he doesn't have to produce his medical records, why doesn't he go ahead and do it?"
"If you were telling the truth, why did we have to water-board you?"
"If he doesn't intend to practice law any more, why hasn't he paid his bar dues?"
"If she asked the court for permission to take inactive status, why did the court enter an order granting inactive status?"
Regards,
D-Ray