Traveling out of the U.S. does not have any impact on an I-140 petition of any kind. So yes you can travel in and out of the country.

She cannot file until five years minus 180 days from the date she resumed her residence in the U.S. So she must renew her green card first.

I am not aware that USCIS informs ICE when people are expected to appear for fingerprints, but if you have been printed before you may not get...

You can do any of those things, extend the B2, change to F1, or depart the country. Or if you qualify for any other visa, try to file for that.

You can get the form and instructions at https://www.uscis.gov/i-407 and that should answer all of your questions.

Yes, if you can show that he is not subject to removal from the U.S., ICE can lift their hold. You can do it yourself or you can hire a lawyer to...

If the visa is available and you are in lawful status, then yes, you can file for adjustment of status. The processing time depends on where you...

If you have your stamp as temporary proof of LPR status, yes, you should be able to apply for a reentry permit.

I understand some country other than the U.S. ordered you deported. That should not have any impact on your immigration to the U.S.

You can send follow ups about every 60 days. They are likely to hold it for quite a long time. If a year has passed, your parents will likely...