March 29 (UPI) -- A judge has temporarily blocked the merger of Nexstar and Tegna, which would create a company that controls 260 television stations across the U.S. Nexstar, already the largest television stations owner in the country, agreed to buy Tegna -- which is Gannett's broadcasting arm -- announced the $6.2 billion merger in August and the FCC earlier this month approved the merger . The deal would give the combined companies access to roughly 60% of U.S. households, and FCC chief