Canadian Travel
any felony charges
US embassy to canada says you need prior permission and maybe pay a fine. depends on what you did
or if 10 years have passed since you completed the sentence
"A. Convictions/offences outside Canada
If you were convicted of or committed a criminal offence outside Canada, you may overcome this criminal inadmissibility
by applying for rehabilitation, or
you may be deemed to have been rehabilitated if at least ten years have passed since you completed the sentence imposed upon you, or since you committed the offence, if the offence is one that would, in Canada, be an indictable offence punishable by a maximum term of imprisonment of less than ten years.
If the offence is one that would, in Canada, be prosecuted summarily and if you were convicted for two (2) or more such offences, that period is at least five (5) years after the sentences imposed were served or to be served."