Gorton was a supporter and admirer of Robert Menzies, who was sympathetic to his ambitions for higher office and assigned him additional responsibilities. In 1959, he was tasked with securing the passage of the Matrimonial Causes Bill, which introduced uniform divorce laws; he described it as "a systematic attempt to make a new approach to the problem of divorce". The bill was opposed by religious conservatives (mostly Catholics) on both sides of politics, but it eventually passed the Senate with only a single amendment. Gorton was appointed assistant minister to the Minister for External Affairs in February 1960, working under Menzies and later under Garfield Barwick and Paul Hasluck. In February 1962, he was also made minister-in-charge of the CSIRO. During question time in the Senate, he represented ministers from the House of Representatives, allowing him to gain experience in portfolios beyond his own.