Until five weeks ago, Arturo Suarez was a professional singer, performing in the United States as he waited for his asylum claim to be processed. Originally from Venezuela, he had entered the US through proper, legal channels. But he is now imprisoned in a notorious jail in El Salvador, sent there by the Trump administration, despite seemingly never having faced trial or committed any crime. The White House claims he is a gang member but has not provided evidence to support this allegation. His brother, Nelson Suarez, told Sky News he believes his brother's only "crime" is being Venezuelan and...