Congressmen should not be "asking" the Supreme Court about any law. They MAKE laws!
Roe vs Wade was and always has been unconstitutional legislating from the bench. Congress should have tried, convicted and removed every Justice who approved it. Since Congress didn't, it needs to pass a law specifying that abortion is a matter reserved to the States in accordance with the 10th Amendment and further specifying that is not subject to judicial review.
The whole concept of judicial review of laws for constitutionality is very shaky.
That law is not going to pass the House of Representatives.