They refuse entry to anyone that has had a DUI in the past 10 years, passport or no.
The U.S. has no such limitation for Canadian citizen entry.
and the records go back forever.
On the other hand, Canada has no records exchange with third world countries or any other country for that matter, so they waive the terrorists right on in.
Again. You don't have a clue what you are talking about.
For a citizen of another country to enter the United States they will be denied entry for any conviction whatsoever. Immigration has the right to refuse you entry.
My juvenile record made me ineligdeable for entry. I has to get an immigration lawyer and have a hearing in order to get my visa when we were starting up in Detroit 15 years ago.
Once I got my visa I was good to go.
As far as entry to Canada again you have no idea what your talking about. Yes a customs official can deny entry based on any conviction however if the crime isn't violent or drugs it's up to the customs agent and his discretion whether a foreigner will be denied entry.
Thanks for your wisdom. Again you've got absolutely no clue and your info is wrong.