This is an amazingly ignorant viewpoint, and I'd bet the farmers in Vietnam of the 1960's and Afghanistan of the 2000's would likely care to differ. Insurgencies undermine the advantages of expensive weaponry.
And if we're talking about a civil war or insurgency within US borders: An army fighting on its own soil and against its own citizens is surrounded on all sides and can't maintain secure supply lines.
And if we're talking about a civil war or insurgency within US borders: An army fighting on its own soil and against its own citizens is surrounded on all sides and can't maintain secure supply lines.