When it comes to businesses, the US government reserves the right to institute international boycotts. Companies may not, generally speaking, boycott a country (or people from that country, etc) unless that country (or person) is being boycotted by the US.
There are mandatory reporting requirements that surround this. If you work in finance and you have not received training on this topic...
For more info: The Office of Antiboycott Compliance -- https://www.bis.doc.gov/index.php/enforcement/oac. From their intro:
"The Office of Antiboycott Compliance (OAC) within BIS is charged with administering and enforcing the Anti-Boycott Act of 2018, Part II of the Export Control Reform Act of 2018 (ECRA), and the antiboycott provisions set forth in Part 760 of the Export Administration Regulations, 15 CFR parts 730-774 (EAR). These authorities discourage, and in some circumstances, prohibit U.S. companies from taking certain actions in furtherance or support of a boycott maintained by a foreign country against a country friendly to the United States (unsanctioned foreign boycott). U.S. companies must report to OAC their receipt of certain boycott-related requests for information designed to verify compliance with an unsanctioned foreign boycott. Prohibited activities include, inter alia, agreements by U.S. companies to refuse to do business with a boycotted country or with blacklisted persons for boycott-related reasons, furnishing information about any person’s business relationships with a boycotted country or with blacklisted persons, and implementation (by U.S. banking entities) of letters of credit that include prohibited boycott-related terms or conditions."