US President Donald Trump announced plans to suspend immigration from all so-called 'Third World countries' following the identification of an Afghan national as a suspect in the shooting of two National Guard members in Washington, DC. The move expands his administration’s tightening of immigration policies, including a directive to re-examine all green card applications from 19 'countries of concern' such as Afghanistan, Iran, and Venezuela. Trump stated that the suspension aims to protect national security and end what he called 'Biden’s illegal admissions.' He also pledged to revoke federal benefits for noncitizens and denaturalize migrants deemed threats to public order. US Citizenship and Immigration Services Director Joseph Edlow confirmed a comprehensive review of all green card cases from the listed nations. The announcement follows ongoing reviews of refugee admissions under the Biden administration, with approximately 200,000 cases under scrutiny. The policy marks one of the most restrictive immigration measures since 1980, further limiting refugee and migrant entry into the United States.