George Washington University law professor Jonathan Turley said Tuesday that Hunter Biden had “no defense” and should have pled guilty to federal gun charges. Biden’s trial on three felony counts surrounding the purchase of a .38-caliber revolver began with jury selection Monday. Turley said that Biden had little hope to avoid a conviction on the charges based on text messages he sent around the time of the purchase discussing his use of drugs, including crack cocaine. “There is no defense that I can see here,” Turley told Fox News host Martha MacCallum. “I mean, it’s akin to getting yourself …