US HB4303

Creates a Special Envoy for Humanitarian Aid Workers with ambassador rank, appointed by the President, responsible for investigating deaths, injuries, or detentions of aid workers on U.S.-supported humanitarian missions

Requires the Special Envoy to submit annual reports to Congress on security challenges facing NGOs, effectiveness of UN coordination efforts, and U.S. humanitarian assistance distribution

Prohibits security assistance and defense articles to foreign countries that unlawfully kill or fatally injure humanitarian aid workers, unless the Secretary of State certifies the country has taken corrective action and will protect aid workers

Establishes an interagency Aid Worker Independent Inquiry Group within 60 days of the Special Envoy's appointment to investigate deaths or detentions of aid workers, with mandatory reports to Congress within 90 days of each incident

Requires a report within 1 year on the effectiveness of the UN Office for the Coordination of Humanitarian Affairs in deconflicting between humanitarian NGOs and foreign countries