President Obama has nominated Office of Management and Budget Director Sylvia Mathews Burwell as the new head of Health and Human Services. Burwell would replace Kathleen Sebelius, who stepped down last week. Burwell appeared with Obama and Sebelius at the White House on Friday.

Sylvia Mathews Burwell: “If confirmed by the Senate, I look forward to carrying on the important work of ensuring that children, families and seniors have the building blocks of healthy and productive lives, whether it’s through implementing the Affordable Care Act, supporting affordable childcare or finding new frontiers to prevent and treat disease.”

Senate Republicans are expected to use Burwell’s confirmation hearings to take shots at President Obama’s healthcare law. Sebelius oversaw the law’s troubled rollout but ended her tenure with the administration hitting its enrollment target by signing up more than 7.5 million people for private insurance.