As was the case with the Senate Finance Committee bill, the bill that the Senate is attempting to take up would exempt persons who are not lawfully present in the United States from the measure's general mandate that virtually everyone living lawfully in the United be covered by a qualified health insurance plan or face tax penalties for failure to comply.  The new measure also mirrors the Finance Committee bill's provision that would make legal immigrants eligible for health care affordability tax credits without regard to a waiting period.  And although there is a slight change in the phraseology, the new bill generally would bar aliens who are not lawfully present in the United States from using their own funds to purchase health insurance products that are listed on the Health Insurance Exchange that the bill would create.  The new bill would establish a new citizenship and immigration status verification regime that would exist in order to ensure that persons who are not lawfully present in the United States do not receive health insurance products and benefits from which they are barred.  It would rely on the recently enacted Children's Health Insurance Program reauthorization bill's mechanism for verification.  It would subject everyone who purchases health insurance through the exchange, benefits from an exchange plan, or receives an affordability tax credit, to a citizenship and immigration status verification using the new regime.