Port OF Entry Doubt for H1b

Planning to book Eithad airways from Hyd to Tampa.

Eithad airways has mentioned “Etihad offers Immigration at Abu Dhabi for Faster Checkout at U.S” .

hyd----> abudhabi—>Chicago—> Tampa

hyd----> abudhabi—>Newyork–> Tampa

which one is better?? As I would like to have safe immigration check which one should I avoid from above two?

If immigration is done at abudhabi, will they again do it in Tampa as well??

please clarify

Immigration is done in Abu Dhabi and it doesn’t matter if you land in Tampa via NY or Chicago.