When Employer's use i-9 verification, do they only see whether the potential employee is eligible to work or do they also see the expiration date of eligibility for alien-workers like us approved with TPS.
I am sure work authorization should be the sole factor for eligibilty and it's illegal to discriminate agains legal workers regardless of immigration status. What I am not sure is how the I-9 works for employers and what information they can access regarding the potential employee.

i-9 will require the details of the potential emoloyee's work authorization document (EAD, GC, H1B,...) including the expiration date, so employer will know your expiration of work authorization.