Considering Trump has reconsidered his position on NATO I think that would be difficult to prove and so far everyone with knowledge of the investigation says there is no evidence of any such activity at this point. Since the election was 6 months ago if there were evidence you'd think they would know about it. I think that scenario is a bit of a stretch, but if it were proven you might have a point.
This is the definition of political activity under FARA and for it to apply it would have to include your scenario of something very similar.
(o) The term ‘‘political activities’’ means any activity that the person engaging in believes will, or that the person intends to, in any way influence any agency or official of the Government of the United States or any section of the public within the United States with reference to formulating, adopting, or changing the domestic or foreign policies of the United States or with reference to the political or public interests, policies, or relations of a government of a foreign country or a foreign political party; (p) The term ‘‘political consultant’’ means any person who engages in informing or advising any other person with reference to the domestic or foreign policies of the United States or the political or public interest, policies, or relations of a foreign country or of a foreign political party.
Foreign Agents Registration Unit (FARA)
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