Polarization of Foreign Policy?

From CBS:

Former White House senior adviser Dan Pfeiffer, who just left his job at the White House Friday, told "CBS This Morning" co-host Charlie Rose that the country is "at a very dangerous point in our polarization of foreign policy."
Pfeiffer thinks the letter is an attempt to undercut President Obama's authority.

That's cute. They think that the Senate doesn't have the final say on foreign policy. The president can sign treaties, but only the Senate can ratify them, and until the Senate ratifies a treaty, it has no force of law.

The US Constitution
Article 2 Section 2 Paragraph 2 (referencing the Executive power to make treaties)

He shall have Power, by and with the Advice and Consent of the Senate, to make Treaties, provided two thirds of the Senators present concur; and he shall nominate, and by and with the Advice and Consent of the Senate, shall appoint Ambassadors, other public Ministers and Consuls, Judges of the supreme Court, and all other Officers of the United States, whose Appointments are not herein otherwise provided for, and which shall be established by Law: but the Congress may by Law vest the Appointment of such inferior Officers, as they think proper, in the President alone, in the Courts of Law, or in the Heads of Departments.