别指望在加拿大办美签了,人家网站上写的很清楚: h0 R6 |) ^' X! V
9 l6 z3 \% E% n# u {& D http://www.consular.canada.usembassy.gov/usa_visa.asp 里的:3 y% q: w3 U; B
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"Important Notice for Applicants with a Visitor's Permit to Canada5 Q( \& u5 I# }9 Q
! S, A! F2 |7 ~. {With rare exceptions, visa applicants temporarily visiting Canada should apply at the U.S. Consular Section in their country of residence."