An 18-year-old US citizen has been held by US Customs and Border Protection and Immigration and Custom Enforcement for over three weeks.Francisco Erwin Galicia was detained at a CBP checkpoint in Falfurrias, Texas on June 27, said Claudia Galan, his attorney. He was travelling with his brother Marlon, a 17-year-old who was born in Mexico, who was also detained. After two days of detention, Marlon signed a voluntary deportation form and was released to his grandmother.“I signed because I wanted to talk with my mom,” Marlon told The Dallas Morning News over the phone from Reynosa, Mexico. “Now, we just have to wait and see and hope that they release my brother.”The brothers were on their way from their home in Edinburg, Texas to a soccer scouting event at Ranger College in North Texas. Travelling with friends, they came upon a CBP checkpoint at around 8pm.Marlon, who was carrying only his school ID, told News that he had only been through a border checkpoint on school trips. Unlike those...