A federal appeals court has upheld the conviction of a “remarkably candid” man who told the Secret Service it was his biblical and constitutional duty to assassinate then-President Barack Obama.The 7th U.S. Circuit Court of Appeals last week rejected the argument there was not enough evidence to find Brian Dutcher guilty of two counts of threatening the president.Dutcher did not limit his discussion of his plans to kill Obama to his two-hour interview with the Secret Service, the court wrote.On June 30, 2015 …