A group of Arizona House lawmakers is launching an effort aimed at cutting the soaring costs to communities of police and fire pensions, with its leader warning that cities could end up declaring bankruptcy if legislators fail to act. The new committee announced by House Speaker J.D. Mesnard comes just over a year after 70 percent of voters approved changes to the state's public safety pension plan designed to return it to solvency in 20 years. The voter approval and separate legislative overhauls to the Public Safety Personnel Retirement System, known as PSPRS, couldn't address current costs because the state Constitution bans cuts to promised pensions.