Any Californians reading this, please don't take it personally; I'm sure you're not part of the problem.
As some of you may know, California is the state where a Tijuana drug mule can take a break in LA to get that disc he herniated while hauling bales of Sinaloa dope treated and send his kid to school on the taxpayer dime, while the state government vigilantly mans the ramparts at the Nevada border, ever alert for invasive avocados. This demonstrates a shocking lack of a sense of proportion when it comes to threats to the state's economic viability.
Meanwhile, during the first decade of this century, we in the rest of the country allowed Californians to sell their 1br/1ba 750sq ft cinder block cracker boxes to each other for $1,000,000 and then come spend that Monopoly money on the housing market in the rest of the country like it was real cash.
California has border checkpoints because they're worried about invasive species? How do you think Coloradans are feeling about "invasive species" right about now? A generation's unfettered immigration has almost finished waxing Colorado's hairy chest and is about to start on giving the old mountain man a mountain mani-pedi; you have to flee to the far corners of the state to get away from the latte fumes emanating from the statehouse these days.
I think the rest of the nation would take it as a kindness if Nevada, Arizona, and Oregon were to seize those California Department of Food and Agriculture border checkpoints and turn their guns the other way and start shaking cars down for signs of dangerous invasive species, like voter's registration cards and real estate brochures.