Remove Your Record
If you have been convicted of a criminal offence, you have a criminal record. It will not be removed automatically. You must make an application under the Criminal Records Act of Canada for a Record Suspension (previously known as a Pardon). The Act helps people with past offences who are now rehabilitated.
Enter the US
A waiver is a document from the US Department of Homeland Security (DHS) allowing you to legally enter United States. If you have a criminal record, you are generally inadmissible to enter the United States. You should be aware that a Record Suspension is not recognized by the United States.
If you have a criminal record there is a strong likelihood that you will be denied entry to Canada, even if you are American. If 5 years have passed since your sentence, you are eligible to apply for criminal rehabilitation. If 5 years have not yet passed, you are required to apply for a Temporary Resident Permit (TRP).