There is probably nothing preventing a confidential informant from making a post on Facebook. However, they probably won't be confidential or cooperating with the government for much longer after that.
Short answer would be that in the short term, they can. However, it would seem quite ill advised for the prosecution to allow it, as it would appear to compromise confidentiality, as well as credibility.
Last I checked there is such a thing as freedom of speech in this country. It is guaranteed by the ist Ammendment to the US Constitution . Its protections extend to saying really stupid things which would include an otherwise CI admitting his role in drug purchases.
The above is not intended as legal advice. The response does not constitute the creation of an attorney client relationship as this forum does not provide for a confidential communication.
Our Rating is calculated using information the lawyer has included on their profile in addition to the information we collect from state bar associations and other organizations that license legal professionals. Attorneys who claim their profiles and provide Avvo with more information tend to have a higher rating than those who do not.What determines Avvo Rating?Experience & background
Years licensed, work experience, educationLegal community recognition
Peer endorsements, associations, awardsLegal thought leadership
Publications, speaking engagementsDiscipline