May 2013 Current Events: U.S. News. Here are the key events in United States news for the month of May 2013. *. Three Additional Arrests Made in Boston Marathon Bombing (May 1):Three arrests are made in connection to the Boston Marathonbombing. Dias Kadyrbayev and Azamat Tazhayakov are arrested and charged with concealing evidence during a federal investigation. Robel K. Phillipos is charged with lying to impede the federal investigation. All three are close friends with Dzhokhar Tsarnaev. If Kadyrbayev and Tazhayakov are found guilty they face up to five years in prison. Phillipos faces eight years. *. Rhode Island, Delaware and Minnesota Legalize Same-Sex Marriage (May 2):After same-sex marriage legislation passes in both houses of Rhode Island's legislature, Governor Lincoln Chafee signs it into law. The new law, legalizing same-sex marriage, goes into effect on August 1, 2013.(May 7):Governor Jack Markell signs the Civil Marriage Equality and Religious Freedom act, legalizing same-sex marriage for the state of Delaware. The new law goes into effect on July 1, 2013.(May 13):In Minnesota, the State Senate votes 37 to 30 in favor of legalizing same-sex marriage. The vote comes a week after it passes in the House. Governor Mark Dayton, a supporter of same-sex marriage, says he will sign the bill the following afternoon. Gay couples will be able to marry in Minnesota in August 2013. *. Orb Wins 139th Kentucky Derby (May 4):Orb, the favorite, wins the Kentucky Derby with a time of 2:02.89. Golden Soul finishes second. Revolutionary comes in third. For winning the race, Orb takes home 1.4 million. Coolers and large purses are banned from the event due to the recent Boston Marathon bombing.