Not a fan of Cruz, but this is sufficient for me. More problematic would be those nations that don't accept or don't allow them to renounce citizenship.

>On the day of arrival in Israel, or occasionally at a later date, a person who enters Israel under the Law of Return as an oleh would receive a certificate confirming their oleh status.

On the very day they step off the boat or plane. This isn't the case of "anyone who comes to the US and waits 10+ years might finally get to become a citizen". Seems pretty fucking automatic.