Provides information on any manufacturing sectors or services where only citizens or a sub-set of the population in that country are allowed to own or sell.
Last Published: 7/22/2019
Private individuals are banned from importing certain items.  Other items are bound by restrictions.  This entails that you must have a special permit or license to import the item.  More information on restrictions for such items at the authority responsible for the regulations:

    Prepared by the International Trade Administration. With its network of more than 100 offices across the United States and in more than 75 markets, the International Trade Administration of the U.S. Department of Commerce utilizes its global presence and international marketing expertise to help U.S. companies sell their products and services worldwide. Locate the trade specialist in the U.S. nearest you by visiting http://export.gov/usoffices.