 B. M. Hertzog that he acquired the Xhosa name "Dilizintaba" ("Remover of mountains").He went on to become the first chairman of the Liberal Party of South Africa's constitutional committee before he joined the Progressive Party (South Africa) and became chairman of its constitutional policy commission as well.He was also one of the Counsel engaged in the constitutional cases questioning the powers of the Union Parliament of South Africa after the passing of the Statute of Westminster in 1931.