回複：借人氣問一下， 移民來的媽媽，到美國一個月了綠卡還沒寄來，請問打電話該去哪裏谘詢？

It is still normal. If she does not receive the GC within two months, contact USCIS or visit USCIS local office. See:

http://www.uscis.gov/portal/site/uscis/menuitem.eb1d4c2a3e5b9ac89243c6a7543f6d1a/?vgnextoid=ddce0b89284a3210VgnVCM100000b92ca60aRCRD&vgnextchannel=ddce0b89284a3210VgnVCM100000b92ca60aRCRD