If You Support the Constitution, How Can You Support This?

The last time Democratic states seceded from the Union, it didn't go well for them:

Supporters of California’s newly-minted status as a sanctuary state for illegal aliens have predictably hailed the move as an act of compassion. However, it’s time to call this what it truly is: an act of rebellion by a state against the authority of the federal government that will endanger the lives of law enforcement officials and California residents.

SB 54, the landmark bill which was passed last October and went into effect this month, bans local officials from asking about a person’s immigration status. Golden State law enforcement will only be allowed to cooperate with federal authorities regarding individuals who have been convicted of committing a specified list of felonies or misdemeanors.

I honestly don't see how people can support this except as a cynical political move.