PORTLAND, Oregon — The United States' first marijuana cafe opened on Friday, posing an early test of the Obama administration's move to relax policing of medical use of the drug. The Cannabis Cafe in Portland, Oregon, is the first to give certified medical marijuana users a place to get hold of the drug and smoke it — as long as they are out of public view — despite a federal ban. "This club represents personal freedom, finally, for our members," said Madeline Martinez, Oregon's executive director of NORML, a group pushing for marijuana legalization. "Our plans go beyond serving food...