Cass Sunstein, the prominent professor, author, legal affairs columnist and former Obama-era regulatory leader, reported receiving more than $580,000 in compensation from Harvard Law School and $220,000 in consulting fees from Apple Inc., according to a financial statement released Monday as part of his return to the public sector.

Sunstein joined the U.S. Department of Homeland Security in February as senior counselor, serving under the leadership of Secretary Alejandro Mayorkas, formerly a partner at Wilmer Cutler Pickering Hale and Dorr. For three years in Obama's first term, Sunstein led the federal Office of Information and Regulatory Affairs, an agency central to the development and oversight of regulatory plans.

Financial disclosures are mandatory ethics filings for many leading U.S. officials, and they offer a glimpse at compensation schemes at law schools, legal departments and law firms. Sunstein's spouse, Samantha Power, who also teaches at Harvard Law, is the Biden administration's nominee to lead the U.S. Agency for International Development. Power reported receiving $471,167 in salary and summer research stipends from Harvard, in addition to tens of thousands of dollars in honoraria for speaking engagements.