I recently arrived in Canada, from New Zealand, and I've been looking at how to migrate to the US - preferably without going through all the heavy application fees and pain-in-the-ass interviews.

I've just found what I consider to be the most convenient way, by far. Those with Canadian or Mexican citizenship and who fit the list of professions here can gain three-year work eligibility with virtually automatic extensions, by way of the TN Visa (from NAFTA): http://www.consular.canada.usembassy.gov/nafta_professions.asp