Gridlock is also called political stalemate, it is a situation when there is difficulty in passing a laws if it doesn't satisfy the needs of the people.
Grid lock occurs due to the filibuster rule, according to it there must be a super majority of 60 senators to bring a bill to the Senate floor. It happens when the control of both houses of presidency and Congress is split between rival parties.
It prevents the government from enforcing arbitrary laws, US was founded by rebelling against the tyrannical rule of British Crown. The framers wanted a provision to prevent government from becoming tyrannical. Gridlock enforces the concept of limited government and protects the individual rights and liberties from government encroachment by passing arbitrary laws.
