I think exshaustion or body trying to cool down
"as a question of property rights" is the best option as to how slave labor in America was primarily seen in the 1850s, since it was an issue of state's rights.
In April 1952, Harry Truman nationalized the steel industry to prevent the workers' strike, that was scheduled to begin that month. It led to the famous Steel Seizure Case, the first case in the U.S. court history to limit the power and entitlements of the president of America. The jury took a stand that the president doesn't hold it in his power to interfere with private property.
