Does the First Amendment protect foreign government entity?
<p>Does a foreign government agency or its subsidiary, particularly on U.S. territory, have the First Amendment right?</p>

<p>It does not, as I understand what you mean. in  <a href="https://www.supremecourt.gov/opinions/19pdf/19-177_b97c.pdf" rel="nofollow noreferrer">Agency for International Development v. Alliance for Open Society International, Inc. II</a>, the Supreme Court held that &quot;plaintiffs’ foreign affiliates possess no First Amendment
rights&quot;. Specifically</p>
<blockquote>
<p>Two bedrock legal principles lead to this conclusion. As a mat- ter of
American constitutional law, foreign citizens outside U. S. territory
do not possess rights under the U. S. Constitution.  And as a matter
of American corporate law, separately incorporated organizations are
separate legal units with distinct legal rights and obligations....it is long settled as a matter of American constitu-
tional law that foreign citizens outside U. S. territory do not
possess rights under the U. S. Constitution.</p>
</blockquote>
<p>Thus a First Amendment argument against a law prohibiting funds being given to a foreign entity would fail (it did fail in that instance).</p>
<p>On the other hand, if you mean, can the US government suppress speech by a foreign person <strong>in</strong> the US, it cannot, not even if they are government agents.</p>

<blockquote>
<p>I am asking about foreign government agency operating on U.S. territory where the US does have jurisdiction.</p>
</blockquote>
<p>Foreign government agencies are generally immune from US jurisdiction in the US under the Vienna Convention on Diplomatic Relations.  As such, they cannot be prosecuted for any crime nor sued for any civil violation unless the foreign government agrees to waive the immunity.</p>
<p>However, if a foreign government agency says anything that the US doesn't like, the US can expel the foreign government agency, or any subset of its officers, or even the entire diplomatic and consular delegation of that country.  They can do this regardless of where the disliked statement was made, because under the convention a host country can expel diplomats for any reason or for no reason at all.  In its most extreme manifestation, this is called &quot;breaking off diplomatic relations&quot; or similar.</p>
<p>The reaction of the US government to unpopular speech by a foreign government is therefore a political and diplomatic matter, not a legal one, and it is not particularly affected by the provision &quot;Congress shall make no law abridging the freedom of speech.&quot;</p>

first-amendment