"메디칼은 전 가족원이 혜택을 받는건지?"
Medical health insurance is a policy that covers most medical expenses that are incurred by ur family. Major medical health insurance polices protect ur family members from spending hundreds of thousands of dollars in cases of extraordinary illness situations.
"메디칼 혜택을 받으면 시민권 신청등 향후 어떤 불이익을 받는건지"--Actually u need to prove that u r a resident alien or US citizen or US national. For example, when initially applying for Medical Assistance or upon a recipient’s first Medical Assistance renewal, individuals who declare they are U.S. citizens must provide satisfactory documentary evidence of citizenship or nationality and identity.