Others will know more, but I remember reading past threads about volunteering, such as this one:
I can also say that 2 years work experience may not be as restrictive as you think–it’s possible work study in undergrad would count, non-profit experience, volunteer work after graduation, etc. This is another case where it’s helpful to parse how legal you need to be (for instance, your spouse’s school might welcome you to teach a computer class during their after school time) and how much you want to do. It could be worth a trip to the department of labor to ask. Alternately, another avenue to try is to look for alumni of your US school/program and see if a company here would help you arrange the internship and work with ARC issues.