The Parliament of Jamaica adopted a law on Tuesday that decriminalizes possession of small amounts of marijuana and created a new agency that will regulate the cultivation and sale of medical marijuana. Now that the measure has been approved in the House and Senate, Governor-general Patrick Allen is expected to sign the measure into law. The Associated Press reports: The act makes possession of up to 2 ounces of marijuana a petty offense that could result in a ticket but not in a criminal record.…