有朋友在这边工作 收入很低，一年两万左右。工签工作。如果申请医疗保险， 用了Medicare 或者是其它的优惠政策， 以后申请绿卡或者公民， 有没有影响？谢谢！
-Unless you have worked in US for 40 quarters (i.e. 10 years), it may affect your future green card application if you use Medicare benefits. But if you use your employer's benefits, i.e. join the group health insurance your employer provide, or purchase private health insurance, that will be fine.
