The Immigration Reform and Control Act $($IRCA$)$:

Group of answer choices

allows discrimination in favor of U$.$S$.$ Citizens $($as opposed to non$-$U$.$S$.$ Citizens legally residing in the U$.$S$.)$ but only so long as the employer can demonstrate that citizenship is a BFOQ.

prohibits employers in certain circumstances from discriminating against employees on the basis on their citizenship.

makes it legal for employers to knowingly hire those not legally authorized for employment in the United States.

prohibits discrimination in favor of U$.$S$.$ citizens as against legal "aliens" $($non$-$U$.$S$.$ citizens legally residing in the United States$).$