FORT PIERCE, Fla. — Former President Donald Trump was in a Florida courtroom Thursday as his lawyers argued a judge should dismiss the federal criminal case involving his handling of classified documents on the grounds that the Presidential Records Act bars his prosecution. Trump’s legal team was arguing its position on whether all or some of the charges should be thrown out because of the 1978 law that governs the preservation of information during and following a presidency. Special counsel Jack Smith has called on the judge overseeing the case to reject Trump’s claim that he…