President Joe Biden’s nominee for attorney general was asked in a newly released letter not to terminate the U.S. attorney overseeing a case involving the president’s son. Rep. Ken Buck (R-Colo.) wrote to Judge Merrick Garland, requesting that he commit during his upcoming confirmation hearings to keeping David Weiss as U.S. attorney for the District of Delaware until his office completes the probe of Hunter Biden. “This probe is critical to defending the integrity of our republic and ensuring the Biden Administration will not be the subject of undue foreign interference,” Buck wrote in the letter, which was obtained by The Epoch Times. “Americans have the right to know whether Mr. Biden’s reported ties to foreign governments will make him subject of blackmail attempts or other nefarious efforts to undermine U.S. national security or otherwise improperly influence American foreign policy. This investigation must be transparent and impartial so that all …