特朗普暂停绿卡抽签计划，此前布朗大学和麻省理工学院的嫌疑人利用该计划进入美国。 唐纳德·特朗普总统暂停了绿卡抽签计划，该计划曾允许布朗大学和麻省理工学院枪击案的嫌疑枪手进入美国。 Trump suspends green card lottery after Brown and MIT suspect used program to enter the U.S. President Donald Trump has suspended the green card lottery program that allowed the suspected gunman in both the Brown University and Massachusetts Institute of Technology shootings to enter the United States.