Final answer:
The statement 'All treaties made by the president must be ratified by the Senate' is true.
Step-by-step explanation:
The statement 'All treaties made by the president must be ratified by the Senate' is True. According to Section 2 Clause 2 of the Constitution, the president has the power to negotiate treaties with foreign governments, but it takes a two-thirds vote of the Senate to ratify them. Treaties are considered formal agreements and require the approval of the Senate.