Is political opposition research from a foreign government against U. S. law?

Yes, political opposition research from a foreign government can violate U.S. law, particularly under the Foreign Agents Registration Act (FARA) and campaign finance laws. If foreign entities provide information or assistance to influence U.S. elections, it may be considered illegal foreign interference. Additionally, the use of foreign-sourced information for campaign purposes can raise ethical and legal concerns. However, the specific legality can depend on the nature of the research and how it is utilized.