别指望在加拿大办美签了,人家网站上写的很清楚: : z: n% l. f) e" G
. o& A1 m% i3 X s2 d/ ` http://www.consular.canada.usembassy.gov/usa_visa.asp 里的: & s3 B* y1 L7 M1 c$ ? ( w; o$ E: M {7 }3 b9 J"Important Notice for Applicants with a Visitor's Permit to Canada. D- j0 p) t6 p7 h
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With rare exceptions, visa applicants temporarily visiting Canada should apply at the U.S. Consular Section in their country of residence."