Anthony Albanese is poised to hold an inquiry into Scott Morrison secretly granting himself the health and finance portfolios during the COVID-19 pandemic, and then adding the role of resources minister, so he could overrule the Nationals and block a gas development off the NSW coast.

Despite Mr Morrison doing nothing illegal or in breach of the Constitution, the Prime Minister said the secrecy surrounding the moves contravened the conventions of accountability that the Westminster system of Parliament demanded.