The constitutional law is one of the five laws that help people protect their rights to the land that they own or are buying. All parties must come to an agreement over the land disputes and if not the state has the jurisdiction to have final say with the evidence provided by the surveyor. Even if the federal government purchases federal land within a state the federal government is required to ably by the states laws that it is in. If they government is trying to acquire land the only way they can is by congress and is required to pay the amount that the court deems fitting, under the sovereign law. A surveyor is required to understand and be familiar with the state laws but that doesn't give the surveyor the right to practice law or give
