I came in United States in February 2013 with Employer A (H1 B valid till Sept 2015) and joined Employer B in November 2013(Got new H1 B visa valid till September 2016). In December 2013 went to India for vacation and did not get my visa stamped with new employer(B)... because my old stamp was [...]
I got an I94 with my H1B approval i-797 notice form and I already have a white I94 departure card attached on my Passport. While travelling to India, should I give both my I94's at airport or just the white I94 attached in the passport? Hand over both I-94s to the airline at the time [...]
The I-94 is known as the arrival-departure record and will be taken from you at the POE (Airport).
If this is an H-1B Visa, there is no requirement to enter the U.S. within a certain period; you could enter anytime during the validity of the approval. However, you must be prepared to explain the delay at the Port of Entry.
Two distinct employers would be treated as having filed two distinct petitions. The two should be completely unrelated and not rely on the same end client documentation/contract(s).
I heard that the H4 period cannot be recaptured. Is that correct? Please clarify. A: Time spent in H-4 is not counted against the H-1B CAP and therefore no re capture is necessary. Please see http://rbhs.rutgers.edu/internationalservices/immigration_updates/documents/uscis_memo_on_h-1b_eligibility.pdf
Unless there is a specific instance of fraud, the USCIS does not randomly call employers to verify the contents of an experience letter.
USCIS FAQs on employment authorization for certain H-4 dependent spouses can be found here.