The white house press corps
The 7 principles laid out everything that needed to be exist within the government for it to function properly.
Those principles are :
Popular sovereignty, Republicanism, Federalism, Separation of powers, check and balances, Limited government, and individual rights
The answer is: state governments
When the immigrants come into united states, they will settle on the states and will most likely have to settle to find a job in that states.
Because of this, the number of employment in that states could be threaten if the increase in the amount of workers far surpassed the increase in the amount of job opportunities. The state government would be the one that is responsible to bear such challenge.
The answer is 1, 3, 4 and maybe 2 but I'm not sure.