The US government is built on the principle of checks and balances. The constitution outlines three branches of government. These are their powers.

Rick Su, an immigration law professor at the University of North Carolina, Chapel Hill said, in his opinion, no branch of government is "‘responsible’ for the crisis at the border." ...

The three branches of the U.S. government are designed to maintain balance and order. Each branch has it's own responsibilities. The Legislative Branch: The basic function of the legislature is to ...