Firstly, the judiciary is not part of the senate, their are three branches of governance in the US; the executive, the legislature (the senate and house) and lastly, the judiciary.
The judiciaries main functions are in settling dispute between states or involving matters above state law; i.e. when a state makes a decision which could be seen as unconstitutional. In addition the power of judicial review gives the judiciary power over the executive and public officials. The separation of powers is arguably compromised in the case of the judiciary as the chief justice presides over cases of impeachment of the President.
Check article III of the constitution for their original powers.
the judicial branch
Article 3 describes the powers of the judicial branch.
The members of the Judicial Branch are appointed by the President and confirmed by the Senate.
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The Judicial Branch
The powers of the judicial branch are contained in Article III of the Constitution, but those powers are not over the executive branch...they are separate from the powers of the legislative and executive branches.
They do no share powers. The legislative branch creates laws. The judicial branch decides the constitutionality of the laws created by the legislative branch.
The Legislative Branch
Article 111 discusses the powers of the Judicial Branch in the Constitution.
In America, the Legislative Branch (Congress - The Senate and the House of Representatives) passes laws. The Executive Branch enforces the laws, and the Judicial Branch interprets the laws. Such is the beauty of American separation of powers.
In the government: the executive branch (president), legislative branch (house and senate), and judicial branch (supreme court), all have powers that balance that powers of the other branches out, so that one of them can't gain too much power.
Judicial Branch