Former US secretary of transportation Elaine Chao allegedly used her department's staff to promote her father and Foremost Group founder James Chao, a watchdog report published said.

The bulk of the report, from the Department of Transportation's Office of Inspector General, described Elaine Chao as using department staff to coordinate events where she and her father would appear.

The inspector general also said members of her staff were assigned to edit James Chao's Wikipedia page.