While he was Minister of Interior, right-wing groups organized street demonstrations in Paris on 6 February 1934 in which the police shot dead fourteen people.

[2] He was reelected in the first round for the Montargis constituency on the list of the Union of Radical Lefts and Socialists.

[3] Frot was under secretary of state for the president of the council from 18 December 1932 to 28 January 1933 in the cabinet of Joseph Paul-Boncour.

He was Minister of Labor and Social Assurance from 26 October 1933 to 23 November 1933 in the cabinet of Albert Sarraut.

[5] Frot remained at the Ministry of the Interior that evening trying to track what was happening, but was handicapped by wildly inaccurate reports that did not mention civilian casualties but stressed violence against the police.

[5] Daladier, several ministers and senior officials gathered at the Ministry of the Interior, where Frot recommended declaration of a state of siege, preventative arrests and a ban on arms sales.

[7] After the others had left, Frot requisitioned army units, launched investigations against the right-wing leaders Charles Maurras and Maurice Pujo, called for an interim ban on all public demonstrations and informed the press and radio of the measures taken.

[8] The next morning Frot received reports that the demonstrations would resume, with the protesters now carrying guns and grenades.

[9] In the aftermath the Action Française journal accused Daladier, Frot, Pierre Cot and Léon Blum of having attempted a coup d'état, and called for them to be punished for the massacre of innocents.

[14] During World War II (1939–45) he voted on 10 July 1940 in favor of the constitutional law that gave full powers to Marshal Philippe Pétain.

He agreed to sit in the Vichy National Council, but soon resigned, and in 1941 refused to enter the government of Admiral François Darlan.

After the Liberation of France the jury of honor declared he was ineligible for elective office due to his vote on 10 July 1940.