Planned Parenthood, under fire from conservatives in Washington and state capitols, chose Leana Wen, an emergency room doctor whose family fled China when she was a child, as its next president Wednesday, picking a woman who won praise for her steadying hand as Baltimore’s health commissioner during the city’s convulsive protests in 2015.

Dr. Wen, 35, grew up poor in Compton, Calif., after her family left China following the Tiananmen Square massacre just before her eighth birthday. She relied on Medicaid as a child, and in nearly four years in Baltimore has drawn acclaim for working with corporations and churches to close racial disparities in health care and sharply reducing infant mortality.

She has also pushed back aggressively on the Trump administration’s cuts to health care. She will take over Planned Parenthood’s leadership at a particularly fraught time. While Americans overwhelmingly support the organization, its Republican critics are pushing to cut its funding and eviscerate or overturn Roe v. Wade, and the Supreme Court is poised to tilt further right as critical cases on women’s health advance through the courts.

Earlier this year, Baltimore sued the Trump administration for cutting teen pregnancy prevention funds, which resulted in a federal judge ordering $5 million in grant funding to be restored to two of the city’s programs. She fought to preserve Title X funding for the city’s health clinics for low-income women, and is leading a lawsuit that accuses the administration of intentionally and unlawfully sabotaging the Affordable Care Act.