In this case, it would appear that Canadian Immigration officials have made the decision to deny you entry to Canada, at this time, due to a past offense in the USA.Thus, at present, you have been denied entry on what they term as "Criminal Grounds".
Unless certain requirements are met (such as obtaining the Minister's Permit, or Certificate of Rehabilitation) it would appear that their decision stands.
Attempting to re-enter Canada without meeting their requirements of a Minister's Permit or such Certificate, will likely result in more refusals of entry to Canada. Such refusals will be recorded, and could negatively affect future entries to Canada, or future applications for residency.
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Campbell,Cohen - attorneys at law
info@canadavisa.com
tel: (514)937-9445; fax: (514)937-2618
http://www.canadavisa.com
________
CAMPBELL, COHEN - attorneys at law
tel:514.937.9445 / fax:514.937.2618
info@canadavisa.com
http://www.canadavisa.com