The establishment of the Federation of Malaya did not go down well with the ethnic Chinese, whereby favourable conditions for obtaining citizenship for the Chinese and other non-Malays were withdrawn. The Malaysian Chinese Association (MCA) was formed in 1949 under the leadership of a Straits Chinese businessman, Tan Cheng Lock who frequently raised grievances over the citizenship terms that were set when the Federation was established. As a result, communal tensions between the Malays and Chinese surfaced, and Onn kept his distance from Tan. Tan encountered initial difficulties with meeting Sultan Ibrahim, who was not accustomed to working with Chinese businessmen.