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The competition regulator is seeking to intervene in Mayfield Development's appeal to the High Court in a case the developer says could have "startling" consequences.

The High Court has upheld a decision to refuse a visa for conservative US commentator Candace Owens, finding the Migration Act's character test did not infringe on the Constitution's implied freedom of political communication.

The High Court has approved the imposition of additional land tax on non-residents and foreign-owned entities, finding that the Commonwealth government had the power to limit the application of international tax agreements.

Billabong founder Gordon Merchant has won the ear of the High Court in his fight over what the ATO claims was a "wash sale" of his 10 million shares in the retailer, but the justices have also agreed to hear the tax office's appeal.

Projects by AGL and Tilt Renewables are among 20 clean energy developments to win underwriting agreements by the Albanese government in the latest tender under the capacity investment scheme.

The High Court has rejected a special leave application by the owners of land acquired to build a Melbourne freeway that sought to overturn an "erroneous" appeals court decision which left them with $2 million for land worth over $30 million.

Mayfield Developments has argued the High Court should overturn a finding that NSW Ports was protected by derivative Crown immunity in entering allegedly uncompetitive agreements to privatise two ports, saying the decision could have “startling” consequences such as allowing the state to devise cartel arrangements.

A judge did not need to recuse himself from deciding the penalty in ASIC's case against Sunshine Loans because his earlier adverse credit findings — far from giving rise to bias concerns — were relevant to the task, the regulator has told the High Court.

Super trustee Retail Employees Superannuation has paid two infringement notices after ASIC alleged it misled over 2,000 members after inadvertently activating insurance cover.

The Chief Justice of the Queensland Supreme Court has warned lawyers they could be referred to the legal watchdog or face a personal costs order if they file submissions that contain hallucinations produced by generative artificial intelligence.