There is no rule against traveling to the U.S. on a J visa with an approved I-140. Your admission depends on you proving you will keep to the...

Perhaps you qualify for a waiver. Analysis of the immigration consequences of crimes requires a lot more information.

Not likely but I suppose it depends on why you are trying to prove that you are the parent of children to qualify for naturalization.

You can write a letter to USCIS, and the National Visa Center, and the U.S. Embassy in Haiti, withdrawing the I-130 petition you filed on behalf of...

My understanding is that if a person work with permission, it does not violate their status in any way.

If the school is accredited, I don't see any reason why it would not be considered a post graduate degree.

He can try to apply for a passport. If he is not facing pending charges, the U.S. generally will not prevent him from leaving the country.

No, people are not allowed to steal other people's property. File a lawsuit for "replevin", find a pro bono service, or possibly the police can help.

You should check with the local bar association to try to locate pro bono legal services to help your wife.

My office does not generally file an I-864 with an employment based adjustment of status application.