By GILLIAN FLACCUS
PORTLAND, Ore. (AP) — Voters in Oregon passed one of the nation’s toughest gun control laws, but the new permit-to-purchase mandate is facing a legal challenge with days to go before it takes effect. A federal judge in Portland will hear oral arguments about whether to put a hold on the law after a joint lawsuit from a gun rights group, a sheriff and a gun store owner. Measure 114 requires new gun buyers to attend a hands-on gun safety course in order to get a permit to buy a new firearm. The law also bans magazines over 10 rounds starting Dec. 8.