He is a non-official member of the Executive Council of Hong Kong and the current chairman of the Liberal Party.

[5] During the 2020 coronavirus pandemic, Cheung spoke out against the government's extension of mandatory social distancing measures.

He complained that his constituents were suffering due to mandatory closures of some types of businesses, such as bars and karaoke centres, and accused the government of "not understanding economics".

In 2018, he opposed the Hong Kong government proposal to increase statutory paternity leave from three days to five, claiming the benefit itself should not even exist, as demands for more would be "never-ending".

[13] Another Executive Councillor, New People's Party chairwoman Regina Ip agreed members should avoid publicly criticising the government.