Congress can amend laws or override vetos.
Each group has a different agenda.
Can delay, revise or defeat proposals.
Congress people can keep being reelected.
Maybe more interested in their states and districts.
President must Notify Congress if intending to declare a national emergency.
Each state of emergency can only last a year.
Congress can end with majority vote.
Limited Presidents ability to refuse to spend more money that congress has voted to find a program.
Money must be spent unless president requests and congress agrees.