If a person from the usa has crossed into canada illegaly and is caught

The person is arrested and charged with a crime. After a hearing the person can be jailed and when the sentence is served, deported and ordered out of Canada forever.

The person can then be held by US officials.

How do I know? I'm ex-homeland security.

Or the person can simply leave Canada and go back to the US before the illegal entry is discovered.

The person is arrested and charged with a crime. After a hearing the person can be jailed and when the sentence is served, deported and ordered out of Canada forever.

The person can then be held by US officials.

How do I know? I'm ex-homeland security.

Or the person can simply leave Canada and go back to the US before the illegal entry is discovered.

I was covicted of a crime 23 years ago nothing at all since can I go to the usa

I was convicted of a crime in canada 22 years ago I'm canadian never been in trouble since can I go to the usa and how do I go about it

Without knowing the crime, shop lifting is a lot different than murder.

A few more details would be nice to give any level of educated answer

You cannot enter US on visa waiver program, you must apply for visitor's visa at the consulate.

You are American, you can return to US anytime.

Are you American ? Just living illegally in Canada?

I have merged all of the posts, In one thread they are American, in another thread they are Canadian. This needs to be clarified