"Local CBS station here in MN saying authorities in TX telling people that if you have children, and they are injured in the storm, they may be charged with child endangerment (for not evacuating). "
Nope. No such thing being said here in Texas. Your MN station is making it up.
By the way, MN took a lickin' last night. Big ol' storm. F-2 tornado. Some suburbs will be without power for nearly a week. The worst of it was just a bit north of us. But it was the scariest storm we've been through. One tree split a few houses down from us. You can read about the excitement here:
http://www.startribune.com/