A stretch of Jackson Heights has devolved into an illegal migrant shopping district — an unchecked open-air market where everything from women to stolen goods can be had, The Post has learned. Roosevelt Avenue near 91st Street is littered daily with migrant vendors hawking goods they ripped off from shopkeepers just steps away, while prostitutes proposition passersby at all hours — and frustrated merchants and residents say they’re helpless to do anything about it. “It’s relentless,” said Milton Reyes, who manages Mi Farmacia pharmacy on the avenue. “You should see it on Saturdays. It’s so heavy you can’t even step...
