回复：急问：H1B 是否可以去加拿大后安全返美？是否可以在加申请美国

if you just stay there for couple days,(the purpose is not to apply a visa ther), please donot apply visa overthere, 'cause if your application is denied there, you can not come back.just think about it, be careful!!
before going, check the US consulate in Toronto for detail.