A flurry of changes on immigration promises a dramatic crackdown. California pushed back in court last time, but may be in a tougher position now, experts say.

Just a few weeks have passed since Inauguration Day, and President Donald Trump has already issued dozens of executive orders and actions — several relating to the U.S. immigration system and border security.

The orders include declaring a national emergency to deploy military personnel to the border, suspending refugee resettlement and ending birthright citizenship.