Immigration, Palabra Final, Politics If Sen. Rubio wants to understand US detention policies, he should forget Guantanamo and go to southwest border May 29, 2012, 5:59 PM 0 LatinaLista — Though Marco Rubio’s parents fled Cuba, Rubio had never been to the island. Technically, he still hasn’t though he did visit Guantanamo Bay today. Rubio was visiting the military installation as a member of both the Senate…