Former President Donald Trump is a huge fan of Robert F. Kennedy Jr., now that the former environmental lawyer, talk show host, and conspiracy theorist has abandoned his independent presidential campaign and thrown his support behind Trump. In fact, Democratic strategist Paul Begala speculated Monday on CNN, Trump could be thinking about swapping him in as running mate. It wasn’t immediately clear if that was possible. But, Begala, said, it wouldn’t be for lack of Trump’s dissatisfaction with his current running mate, Sen. J.D. Vance (R-OH), who has become one of the least popular running mate…