FILE - This Jan. 3, 1961 file photo shows Cubans lining up outside the U.S. embassy in hopes of getting visas after President Fidel Castro ordered the embassy to reduce its staff within 48 hours in Havana, Cuba. After the diplomatic break in 1961, Washington was without a presence in Cuba until 1977, when the interests sections were opened under President Jimmy Carter. The U.S. and Cuba announced on Dec. 17, 2014 they are re-establishing full diplomatic relations.  (AP Photo, File)

US officials seek end to Cuban restrictions on diplomats

The migration and normalization talks between the United States and Cuba are the biggest face-to-face meetings since Presidents Barack Obama and Raul Castro announced their intentions last month to re-establish diplomatic ties.