Colorado set to defend new law on marijuana DENVER — Colorado is defending its pot law for the first time today in a filing due to the U.S. Supreme Court. Today is the deadline for Colorado to respond to a legal challenge from Oklahoma and Nebraska. The lawsuit challenges Colorado’s legalization of recreational marijuana and is one of four lawsuits that aim to dismantle the young industry. Colorado’s neighbors claim that the 2012 pot legalization vote has sent the drug flooding across Colorado …