Why do laws passed by Congress often lack clarity? How does this affect the way these laws are implemented by the bureaucracy?

What will be an ideal response?

An ideal response will:
1, Note that Congress often passes vague laws because doing soallows members of Congress to avoid crafting the messy and contentious details of legislation. It also provides members of Congress with cover in case the law is or becomes unpopular—they can always blame the bureaucracy for failing to implement it the way Congress intended.
2, Explain that vague laws can be harder to implement, because the bureaucracy has little guidance and legislative intent is unclear. However, this also means the bureaucracy has considerable flexibility in shaping the details of the policy when itcrafts the regulations necessary to implement the law.