Yes people have, and they won [1]. The Patriot Act tried really hard to walk the line between disallowing counsel and making the retaining of counsel extremely

Yes people have, and they won [1]. The Patriot Act tried really hard to walk the line between disallowing counsel and making the retaining of counsel extremely difficult... [1] https://www.eff.org/cases/re-matter-2011-national-security-letter https://www.eff.org/cases/re-matter-2011-national-security-l...