line
None. A border defines the boundary of a state therefore no state will cross the border of another state.
youz
california
Alaska and Hawaii do not border any other state.
Alaska and Hawaii
most likely just another state but especially if it is not called an international border
The Columbia River separates Washington State and Oregon.
An island state or country.
Hawaii
unless you are Hawaii or Alaska, then yes
border ruffians?
The question does not make sense. All of the states of Australia share a border with another state. Even Tasmania, the island state, shares an actual land border as well as a water border with another state.