We see it exactly opposite. The military should have considered that- not vice versa. If the citizens hold out and refuse, polk needs to find another piece of land to purchase/use.
I'm not against the military expanding, I'm against any govt telling people that "you dont live here anymore because we need it and didn't plan ahead"
How far ahead do they need to plan? Looks like right now they're planning ahead. Should the government have done all of its planning in 1774?
If there was a large community with thousands of people displaced, I would be more apt to see your point. From info in this thread, only about 28 families are affected.