The “death do us part” thing is a tradition, but marriage is a legal status. Not everyone is going to follow that tradition, and surely you wouldn’t argue this ought to bar them from the legal status

There are a lot of good answers already but I want to add that this changes the situation for any Hispanic people swept up by ICE. If officials feel like they can connect a person to the cartels in any way whatsoever, that individual can now be accused of being a terrorist. This changes the legal process they face, and that’s not good news for them. It’ll be easier to send the person to Gitmo. It’ll be harder to fight for that person’s freedom. They’ll likely be tortured, and anything they say can be used as pretense for further aggression by the Trump administration, both domestically and foreign.