D.C. United defender Joseph Mora has acquired a green card, paving the way for United to make multiple international signings within this transfer window. Mora, 26, joined the Black-and-Red back in March of 2018, and has had to miss several days of training recently to jet back to his native Costa Rica in order to get the relevant paperwork sorted out.
With Mora now a domestic player for MLS roster purposes, United has six current internationals: Leonardo Jara, Junior Moreno, Marquinhos Pedroso, Lucas Rodriguez, Wayne Rooney, and Ulises Segura. Segura, Moreno, and Rooney would have the shortest timeline to acquire green cards of their own, though there is no guarantee that the process is strictly based on time spent.