I'm a Dvorak guy.

I recently installed a new machine at the inlaws who are not Dvorak people.

I stupidly selected Dvorak as my Input Method of choice while installing OS X.

Now, all of the users I created default to Dvorak and need to go through the manual process of removing Dvorak as their Input Method of choice and instead choosing U.S.

I have no idea how far reaching the implications might be. Could be that any time another user is added they will default to Dvorak.

Right now, I'd like to set the default back to U.S. How can I do that?

Behaviors I'm looking for include that when the Input Menu is not shown at the Login Screen, U.S. is the keyboard layout. Any future users created should default to U.S. with no Input Menu in the menu bar. Any users created already should have their default layout be U.S.

Thanks in advance!