What might happen if Congress did not have non legislative powers

It did not control the government well.

Explanation:

If Congress did not have non legislative powers, it did not control the government well because non legislative powers gives ultimate power to Congress such as  impeachment , confirmation and investigative power. With these non legislative powers, the Congress done its work very well and strong control over officials of their government. So if Congress did not have non legislative powers, it is difficult for them to control its officials and other problems.

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