L1A Visa - What do I do if I lost my job?

I have a L1A visa and recently lost my job.

1.) Do I have to leave the U.S. immediately or is there there a time limit with which I have to leave by? i.e. 30 days, 60 days etc.
2.) Can I come back as a visitor right away?

Any other information would be helpful.

Thanks.

This has been a subject of discussion, the caselaw is that you have a "reasonable" amount of time to leave, and USCIS seem to interpret that to mean ten days in their manual. Your employer has to notify them of the termination so in theory they do know about it, but I'm not sure how long your employer has to tell them.

You can come back as a visitor in B-2, provided you haven't already been in the US for over six months in the current calendar year (in any non-immigrant classification).

You can also file I-539 to change to B-2, but you have to file 45 days before you current stay expires according to the instructions so it's not really an option.

Thanks! Why would I need B-2 visitors visa if I'm Canadian? I thought Canadians didn't need vistitors visa's?

I didn't say you need a visa, I said you would enter as B-2, which is the category.