WASHINGTON — Mario Marquez still carries the hardship and memories of his four deployments to Iraq with the Marine Corps between 2002 and 2009. He said he doesn’t understand why America still holds onto its military authorizations to wage war there, more than a decade after the fighting officially stopped. “Millions of servicemen and women answered a call to serve in Iraq, willingly and without question, and we did so without ever knowing a definitive end to our service,” Marquez told reporters