I recently got my w2's and the federal witholding tax was missing... What do I do?? And Why would it not be there?

Was there any federal tax withheld? Check your pay stubs and check with the payroll clerk at your place of employment.

It is misssing for one of two reasons, 1. the company errored in the printing. 2. they did not withhold any during the year ( either because of error, the amount of dependents you claimed, or the amount of your earnings)

Agreed!