现在在墨西哥的美国大使馆开放签证预约了吗？

准备到在墨西哥城的美国大使馆，去办理签证。但是看到网上说 ” A Third-Country National is a citizen of a country other than Mexico who applies for a non-immigrant visa with their non-Mexican passport. Routine appointments for applicants not ordinarily resident in Mexico are not available at this time.  “
所以没有办法进行预约签证了吗？ 地里有没有最近成功预约的