Nigea said:If you do a flag pole run to the USA and they stamp your passport DENY ENTRY, does this not affect further entry into US at a later time
Take a look at this thread (and many others on the topic): http://www.canadavisa.com/canada-immigration-discussion-board/-t32199.0.html
Apparently it's called an "administrative denial" and has absolutely no effect on future travel to the US.