Sound Transit wants to extend its yet-unfinished light rail line all the way from Seattle to Tacoma. King County exec Ron Sims doesn’t like the idea.

This is an example of political turf-holding at its most basic. I disagree with Sims’s position, but respect him for taking it.

Part of Sims’s job is to promote King County as a place to live and work. Enabling easier commuting to/from Pierce County doesn’t aid that mission. It might even potentially harm that mission.

But in the big-big picture, we’re an economically integrated metroplex and had better start acting like one.

As Seattle becomes ever more haughty and costly, Tacoma’s more affordable housing is more vital. So is Tacoma’s status as a funky, unpretentious, working-class anchor.

Besides, I’d love easier car-free access to the Java Jive and the Fife Poodle Dog.