引用：
1，网上预约按指纹的时间和面签的时间。先填DS160，拿到确认号之后，去mexico 官
网交钱（140刀）和预约： http://mexico.usembassy.gov/visas/non-immigrant-visas/how-to-ap
-- Step 1: Complete the DS-160 Online Application，Nogales的DS160不用传电子
照片。
¨ Step 2: Schedule your appointment(s) through the Appointment Center and
pay the application fee
¨ Step 3: Appear at the ASC to submit application, fingerprints, and photo
¨ Step 4: Appear at the Embassy for interview (NOT REQUIRED FOR ALL
APPLICANTS)
¨ Step 5: Appear at local DHL Office to pick up passport and visa (IF
APPROVED)，对第三国签证者，还是去US consulate去取。
一般可以预约到两天以后的，位置很宽裕。
