Summarize this content material to 2000 phrases in 6 paragraphs WASHINGTON (AP) — Massive U.S. airways and a few of their unions are asking the Biden administration to cease approving any extra flights between the USA and China due to what they name “anti-competitive” insurance policies that China imposes on U.S. carriers.The airways and unions stated Thursday that China closed its market to U.S. carriers on the outbreak of the pandemic and imposed guidelines that also have an effect on American operations and airline crews.“These actions demonstrated the clear want for the U.S. authorities to determine a coverage that protects U.S. aviation staff, trade and air vacationers,” they stated in a letter to Secretary of State Antony Blinken and Transportation Secretary Pete Buttigieg.The letter was signed by the CEO of the Airways for America commerce group and the presidents of the Air Line Pilots Affiliation, the Allied Pilots Affiliation, which represents crews at American Airways, and the Affiliation of Flight Attendants.The variety of flights between China and the U.S. has been rising, though it stays far under pre-pandemic ranges. The Biden administration elevated the variety of spherical journeys that Chinese language airways could make from 35 to 50 per week, beginning March 31, after China’s aviation authority promised to hunt a rise in flights by U.S. carriers.The U.S. airways stated Chinese language airways get a bonus by flying shorter routes by Russian airspace, which has been off-limits to U.S. carriers since Russia invaded Ukraine greater than two years in the past. They stated Chinese language airways additionally get “sure protections” from China’s authorities as a result of they’re state-owned.The U.S. trade teams stated of their letter that the ultimate entry to China’s aviation market, American carriers will lose flights to Chinese language airways.