Which US state has no straight lines along its borders?

Hawaii. This is an interesting question, not just a tricky one. Really! We usually think of state boundaries as being well defined - when you leave Illinois and cross into Wisconsin on I-94, there's a clear (if imaginary) boundary, the pavement changes, jurisdiction changes, etc. With Hawaii we have two possible definitions for the state line. First is the coastline, which is not straight in the same sense that, say, the Utah-Arizona boundary is straight. Second is the outer edge of the exclusive economic zone (EEZ), which is that region of the ocean around Hawaii that is United States controlled. Beyond this 200 mile zone lap the so-called international waters. The EEZ is defined as a buffer around the land; the linked map should make this clear. Its boundaries are not straight lines either. Map of Hawaii and its EEZ.