LONDON (Reuters) – Russia’s state prison service told Reuters on Thursday that jailed ex-U.S. Marine Trevor Reed had declared a hunger strike on March 28 to protest disciplinary action against him, but that he had repeatedly tested negative for tuberculosis. The 30-year-old Texan’s parents met U.S. President Joe Biden on Wednesday, having raised fears that their son had contracted tuberculosis in a jail in Russia’s Mordovia region. They said that their son, who is serving a nine-year term, had been exposed to an inmate with active tuberculosis in December, had not been tested or received prope…