Asking is legalas long as job related, or required by feds. Professionally developed ability test. Preferential Treatment Quota's are illegal, use of race alone illegal, job related criteria is legal. National security Permitted when group membership is seen as threat to U.S. security. Other treated differently.
Older workers can waive right to sue in exchange for sweetened early retirement.
Must have EEO operation in facility. Complete I-9 Form 4 to 14 employees may not discriminate on national origin or citizenship. May select US citizen over alien if equally qualified. Rehabilitated drug uses can not be fired for ex-habits. Alcoholics can be given a choice.