"[14] His litigation tactics have led to criticism and to sanctions from legal authorities[15] including a ban from appearing in two courtrooms[9] and suspensions for one of his law licenses.
[9] In the 1990s, Klayman deposed several White House officials and probed James Carville about his television habits, Paul Begala about his priest, and George Stephanopoulos about his traffic tickets.
[5][29] Following Klayman's behavior in a 1992 trial in California federal court, Judge William Duffy Keller barred him from his courtroom for life.
Five years later, in a separate case in New York, Klayman's behavior led District Judge Denny Chin to issue a lifetime ban on the attorney practicing law before him.
[30] In 2007, Klayman received a $25,000 retainer from a Daytona Beach woman facing criminal charges who accused him of not providing legal services in return.
[31] The Florida Bar mediated the matter, and Klayman agreed to pay off a small portion within 90 days, but after the deadline lapsed, he was reprimanded.
"[34] The D.C. Court of Appeals, which supervises the D.C. Bar, in 2020 instead suspended Klayman's license for 90 days and ordered him to complete a class on legal ethics.
Circuit Court also suspended Klayman's ability to practice before it for 90 days over this matter; it also referred him to one of its committees to determine whether further discipline is warranted.
[13][42] In one case, a federal judge ruled that Clinton violated the Privacy Act when he released personal letters[43] between him and a female White House volunteer.
The woman had appeared on national television accusing him of making improper sexual advances, and Clinton claimed that he released the letters to discredit her.
[51] Klayman represented Jared Paul Stern in his unsuccessful defamation lawsuit against the Clintons, Ronald Burkle, and the Daily News.
[55][56] In the wake of the 2016 shooting of Dallas police officers, Klayman filed unsuccessful lawsuits against Hillary Clinton, Obama, George Soros, former US Attorney General Eric Holder, Nation of Islam leader Louis Farrakhan, Al Sharpton, and some of the founders of the Black Lives Matter movement by alleging they had incited a "race war" that led to the shooting.
[57][58][59] In 2016, Klayman, on behalf of family members of two people killed in the 2012 Benghazi attack, unsuccessfully sued Hillary Clinton for wrongful death and defamation.
[63] In 2012, Klayman filed on behalf of a Florida resident an unsuccessful challenge to Barack Obama's placement on the primary ballot and claimed the president is not a natural-born citizen, as required by the US Constitution.
"[68] Weeks later, Klayman sponsored a "Reclaim America" rally in Lafayette Square, across from the White House, and called for Obama's impeachment.
[74] Later in 2015, the district court enjoined the NSA from collecting data about Klayman's client, a California lawyer who had recently been added to the lawsuit, but the D.C.
[81] Serving as an attorney for Jerome Corsi, Klayman falsely asserted during a March 2019 CNN interview that Obama's birth certificate "uses the word 'African-American' in 1961.
[91] In 2022, Klayman sued the PGA Tour, claiming its suspension of players who participate in LIV Golf's tournaments violates antitrust laws.
In 2013, Klayman defended his actions in an interview with ABC News and said that it was "essentially a case against my stepfather" and that he named his mother "because legally she was next of kin.
[104][105] Klayman represented José Basulto[106] of the Cuban exile organization Brothers to the Rescue, and won a $1.7 million judgment against Fidel Castro in 2005.
[107][108] Klayman represented Vincent Forras in a lawsuit against Feisal Abdul Rauf to prevent the building of the so-called Ground Zero mosque.
In the motion to dismiss, Rauf's attorney called Klayman an "infamous publicity hound" and wrote that Forras "trades in his well deserved laurels for fifteen minutes of fame as a nationally recognized bigot."
[109][110] Klayman filed an unsuccessful lawsuit on behalf of Joe Arpaio that alleged that the Obama administration's actions on federal immigration policy had not been authorized by Congress.
[129] Klayman filed an unsuccessful suit on behalf of Kiara Robles, who alleged her First Amendment rights were violated when she was attacked during the 2017 Berkeley protests.
[132] Klayman, on behalf of Freedom Watch and later also Laura Loomer, filed an unsuccessful lawsuit against Google, Facebook, Twitter, and Apple, alleging that the companies conspired to censor conservative content.
[137] Klayman filed a request for an investigation into the Special Counsel's tactics on behalf of Jerome Corsi, who was a subject of the investigation of 2016 presidential election;[138] Klayman also represented Corsi in an unsuccessful lawsuit alleging Mueller and other government actors violated his constitutional rights and leaked grand jury secrets.
[141] Klayman filed a suit on behalf of himself, Freedom Watch, and a Dallas-area photography studio which alleged that the Chinese government created the coronavirus disease as a biological weapon.
[147] Klayman filed a lawsuit on behalf of seven former Philadelphia police officers which alleged that they were wrongfully fired following discovery of their racist comments.
[152] In addition to defamation lawsuits filed on his own behalf or against the Clintons, Klayman also has litigated defamation lawsuits on behalf of Forras,[153] Joseph Farah,[154][155] Bradlee Dean,[156] Arpaio,[157][158][159][160] Montgomery,[161][162] Loomer,[163][164] Corsi,[165][166][167][168] Roy Moore,[169][170][171][172][173] Laurie Luhn,[174][175] Jackie Beard Robinson,[176] George Zimmerman,[177][178] Demetrick Pennie,[142] and Patrick Reed.