[7] On 9 July, a group of eight senators of Haiti nominated Lambert to replace assassinated Jovenel Moïse as president, but this move was not recognized by the acting prime minister Claude Joseph.

[8] However, he later revealed to The New York Times that he had been made to abandon the swearing-in because of pressure from the United States, which had decided to recognize Ariel Henry as the interim Prime Minister and urged him to not declare himself as the President.

[9] After Henry started coming under scrutiny for his alleged involvement in Moïse's murder, Lambert again claimed to be Haiti's President and tried to have himself sworn-in at the Parliament building on 14 September 2021.

[11] Lambert was sanctioned by the U.S. Treasury Department on November 4, 2022, pursuant to Executive Order 14059 of December 15, 2021, “Imposing Sanctions on Foreign Persons Involved in the Global Illicit Drug Trade.” The Office of Foreign Assets Control designated Lambert for having engaged in, or attempted to engage in, activities or transactions that have materially contributed to, or pose a significant risk of materially contributing to, the international proliferation of illicit drugs or their means of production.

[14] Canada's Minister of Foreign Affairs, Mélanie Joly, announced coordinated sanctions against Lambert under the Special Economic Measures (Haiti) Regulations on November 4, 2022.