That sound you hear is the Prolife unstoppable force meeting the Immigration-reform immovable object.
Not really. According to U.S. law, a child is not a U.S. citizen until it is born. It is conceivable that, even in a pro-life legal framework, children are not citizens until such time as they are born---in which case it would be reasonable to interpret the law such that pregnant women can be deported, even if you grant the fetus is a live human being worthy of equal protection. Clarification might be necessary to satisfy judges, but as the law stands now I think it's reasonable to support deportation here.