Keycy Robinson Alexis Barrera-RosaBALTIMORE — U.S. Immigration and Customs Enforcement arrested illegal 23-year-old Guatemalan national Keycy Robinson Alexis Barrera-Rosa, April 5, in La Plata, Maryland. Berrera-Rosa is pending charges for the murder of his girlfriend, Lesbia Mileth Ramirez-Guerra, 23. Ramirez was also a Guatemalan alien.Barrera-Rosa’s uncle, Rolvin Eduardo Barrera-Barrera, 37, has also been charged by…