You will be admitted into the U.S. so long as the reentry permit and your passport are not expired. If you establish a patter of coming to the...

There is no way to know for certain, but I would expect it could very well be in issue since it appears they are spending most of the year in the U.S.

Filing an AR11 to change your address should not have any negative affect on your I-130 petition for alien relative application.

Realistically the only way you can find out is when you hear from him or someone else who knows his whereabouts and current situation.

If you have not in any rush, you can file with USCIS. If it is a rush, you should try going through the consulate.

If they are all on one form, you should be able to include all of them on the I-134 or to write a letter and provide your proof of income.

You would need a waiver to come to the U.S. because you have been convicted of violating a controlled substance law or provision.

it will be faster if they are already in the U.S. If you will have to commit fraud in order to get them to the U.S., then you should simply file...

Generally, the sooner they file, the sooner the visa will be available. You can check the visa bulletin for the availability dates.

If you have a work permit, it seems to me that you are permitted to work. Ask your J1 administrator if working, with a work permit, would violate...