[2] Al-Haffar joined Ahmad Nami's cabinet as minister of public works and economy in April 1926, but resigned two months later in protest of French interference.

The Bloc, under the leadership of Hashim al-Atassi, became the central umbrella group for political resistance against the French occupation.

The strike lasted sixty-days, and al-Haffar was arrested during a demonstration against the French-appointed prime minister, Taj al-Din al-Hasani.

To end the protests, France invited the Bloc to Paris for negotiations which eventually resulted in the Franco-Syrian Treaty of Independence.

The cabinet, in which he also headed the education portfolio, lasted less than two months and was faced with a growing opposition under the leadership of al-Haffar's former ally, al-Shahbandar.

He served as deputy to Prime Minister Mardam Bey until the military coup of Chief of Staff Husni al-Za'im overthrew the Quwatli administration.

[2] His daughter, Salma Kuzbari, became a Syrian writer and activist who catalogued her father's life and work in the 1995 book Lutfi al-Haffar: 1885-1968.