https://en.wikipedia.org/wiki/United_States_embargo_against_...

    As of 2018, the embargo, which limits American 
    businesses from conducting trade with Cuban interests, 
    remains in effect and is the most enduring trade embargo 
    in modern history

    The UN General Assembly has, since 1992, passed a 
    resolution every year condemning the ongoing impact of 
    the embargo and declaring it in violation of the Charter 
    of the United Nations and of international law. In 2014, 
    out of the 193-nation assembly, 188 countries voted for 
    the nonbinding resolution, the United States and Israel 
    voted against and the Pacific Island nations Palau,
    Marshall Islands and Micronesia abstained. Human-rights
    groups including Amnesty International, Human Rights
    Watch, and the Inter-American Commission on Human
    Rights have also been critical of the embargo.
    Critics of the embargo say that the embargo laws are too
    harsh, citing the fact that violations can result in up
    to 10 years in prison.

    In a 2005 interview, George P. Shultz, who served as 
    Secretary of State under Reagan, called the embargo 
    "insane". Daniel Griswold, director of the Cato
    Institute's Center for Trade Policy Studies, criticized
    the embargo in a June 2009 article:

    The embargo has been a failure by every measure. It has
    not changed the course or nature of the Cuban
    government. It has not liberated a single Cuban citizen.
    In fact, the embargo has made the Cuban people a bit
    more impoverished, without making them one bit more
    free. At the same time, it has deprived Americans of
    their freedom to travel and has cost US farmers and
    other producers billions of dollars of potential exports.