In 2018, a closely divided 5-4 Supreme Court upheld Donald Trump's travel ban policy targeting residents of several Muslim-majority nations. In doing, so the Court relied in part on the notion that Trump's notorious campaign promise to institute a "Muslim ban" was not the real basis for the policy, or at least not the only one. Rather, the travel ban was also justified by a supposedly objective and thorough government study concluding that people from the nations covered by the ban may pose special security risks.
