This legislation seeks to limit the Executive Branch's authority to suspend or restrict the entry of foreign nationals into the United States, promoting fairness and transparency in immigration policies. It establishes that any such actions must be based on credible evidence related to national security or public safety, ensuring that restrictions are narrowly tailored and time-bound. The bill mandates consideration of waivers for family members and humanitarian cases, and requires that Congress be notified with supporting evidence before any suspension is enacted.