Proposal would require 'increased flexibility' at times for need
Leaders call for solidarity, rile ban at Thursday night gathering
Nation's largest LGBT group backs limited access to assault rifles, background checks
2016 hopeful wants to 'take that energy' of his campaign to Philadelphia
Statement decries easy access for 'bigots' to weapons
President, vice president placed flowers at memorial
Says Iraq withdrawal led to rise of ISIS
Calls for end to religion-based bigotry
Investigation underway into complaint filed by passenger
Florida governor among those who greet president at airport