What are the consequences of overstaying by 15 days for B2 visa (5 years multiple entry visa)?

I suggest that your parents depart the U.S. before their I-94 expiry or apply for an extension.

You could also try calling the USCIS: 1-800-375-5283.

Why my wife’s visa became from O-3 to B2?

I suggest that you call the USCIS and inquire about the unintentional COS, or work with an immigration attorney to do so. If you didn't request the...

How would a German citizen go about immigrating to the US permanently for work?

Your girlfriend may be eligible to immigrate permanently to the U.S. via an employment-based petition or a family-sponsored petition (as the fiancé...

Does my wife COS from H4 to visitor would effect our I-140 filling ?

The I-140 is a future promise of employment. Your spouse applying for a COS now should not affect the I-140 process.

Can I apply for Adjustment of Status after overstaying my visa?

Yes, you may apply for adjustment of status. You may need to submit Form I-864A if your sponsor’s income and assets do not meet the income...

I would use the most recent A-number and submit copies of your OPT EAD card and the Form I-797s with the adjustment application.

Can I contact the congressional representative in my district to help me to get my decision?

Our congressional representatives are happy to help Massachusetts residents who are having problems with immigration. I suggest that you consult...

Can I submit my 485 (EB1A) while I am out of US (while waiting for my H-1 to get effective)?

You must be physically present in the United States to file the I-485.

What if you want to serve someone who is (temporarily) out of the state/country?

I'm not sure that I understand the immigration aspect of your inquiry. Perhaps this question would be better suited for a different Q&A section.