That's not what the 9th amendment says. Those are your words.
At least you agree that the Constitution doesn't say abortion.
The Constitution doesn't grant rights. If you believe that, you're an idiot and a liar. You also invalidated your own argument.
As far as immigration is concerned, Congress does have authority to do so.
Yes. The 9th Amendment says the people have "other rights" than those listed in the first eight. It is because they listed many of the most important rights but did not want it to seem those are the only rights we have. Those are not my words but the words of the court in the Griswold case.
The Constitution does not grant rights, but it lists those rights government cannot restrict. One right government cannot restrict is our right to privacy as it applies to abortion decisions.