Since 1947, a separate unit in the white house has overseen the vast foreign-policy establishment and the president make sense out of all the messages arising out of the bureaucracy. what is the name of this unit?

The United States National Security Council

Explanation:

The US National Security Council was established in 1947 by former president Harry Truman. It serves as an advisory body to the president, and it´s part of the executive branch.

Several senior officials participate in the meetings of the US National Security Council, for example:

The meet in the Situation Room of the White House, and have the power to order things such as the killing of an individual who is suspected to be a terrorist.

whose power in the senate is equal to the power of the speaker of the house?

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