T-Mobile has done a lot to shake up the American wireless industry over the last year, but it still faces a sizable gap in network quality compared to Verizon and AT&T, America’s twin wireless titans that both have access to the best spectrum money can buy. And now The Center for Public Integrity has put together a lengthy report detailing how Verizon and AT&T are ramping up their lobbying operations, ahead of another low-frequency spectrum auction that has the potential to give them a killer advantage over T-Mobile and Sprint for years to come.