President Trump has tapped Republican Sen. Markwayne Mullin to lead the Department of Homeland Security, replacing Kristi Noem after months of controversy over ICE operations. The Oklahoma senator, known for his 2023 confrontation with Teamsters President Sean O'Brien, brings substantial business experience to the role. Mullin's financial disclosures reveal a multimillionaire portfolio spanning multiple ventures.

Mullin's wealth stems from diverse holdings including Mullin Plumbing, a regional service company he's operated for 28 years, and Mullin Ranch LLC, a 1600-acre cattle operation worth between $1 million and $5 million. His wife Christie recently sold Rowan's Restaurant for $1-5 million. The couple owns at least 30 commercial and residential properties, four valued over $1 million, plus corporate securities and mutual funds. In 2024, Mullin took a $5-25 million line of credit from BNY.

His financial interests raise potential conflicts as he oversees immigration enforcement and federal contracts. Mullin's plumbing business received a COVID-era Paycheck Protection Program loan that was later forgiven. With an estimated net worth reaching $65.9 million, he joins other wealthy senators like Jim Justice ($664 million) and Mark Warner ($76-303 million) in Congress.