The SEIU joins several cities in California, the National Council of La Raza, and others in boycotting Arizona. Given the large Hispanic portion of their membership, that’s not a surprise. But what does that mean in practice?

The Service Employees International Union (SEIU) said its 2.2 million members will not attend any meetings or conventions in Arizona as long as the new immigration law is in place.

“On behalf of working families and the more than 8 million residents of Arizona, we will not back down until the Arizona state legislature, the courts or the Federal Government invalidates this dangerous and discriminatory law,” said Eliseo Medina, SEIU Executive Vice President.

In the grand scheme of things that doesn’t mean much – it’s unclear that SEIU would have held any meetings in Arizona anyway. But there’s a cumulative effect here of being seen as basically a pariah. If labor, which holds in their pension funds major assets in a lot of big corporations, becomes activist and demands that those corporations avoid Arizona, then suddenly you could have a major hit to the travel and tourism industry in the state. And that would have an impact.