This bill extends whistleblower protections to a broader group involved in federal contracts and grants—including contractors, subcontractors, grantees, personal service providers, and former employees. It prohibits retaliation when these individuals refuse illegal orders or report waste, fraud, abuse, mismanagement, legal violations, or threats to public health or safety related to federal, Defense, or NASA contracts and grants. It also bars executive branch officials from pressuring organizations to retaliate and allows for disciplinary action against those officials if they do so. Whistleblower rights cannot be waived by contract or arbitration, making these protections mandatory for all covered parties.