Cuba has blamed US policy for a surge in migration from the island to the United States.
The Cuban foreign ministry said US laws dating back to the Cold War encouraged illegal emigration.
The statement was published as almost 2,000 Cuban migrants remained stranded on the border between Costa Rica and Nicaragua.
The Cuban migrants say they want to reach the US, but Nicaragua has so far denied them passage north.
Wet foot, dry foot
Under the 1966 Cuban Adjustment Act, Cuban nationals can become residents in the US much more easily than applicants from other countries.