Which "hat" gives the president the power to negotiate treaties?

The right answer is the Chief Diplomat Hat

The United States Constitution allows the president to negotiate treaties with other nations. As the country’s Chief Diplomat, the president has the power to oversee the nation’s foreign relations as well as appoint the country’s representatives to other nations.

 The hat of CHIEF DIPLOMAT

Further details:

The various "hats" worn by the President, according to an article by Scholastic on "Seven Roles for One President," are these:

In regard to the President's role as Chief Diplomat, Article II, Section 2 of the Constitution gives him that authority -- with the advice and consent of the Senate.  That section of the Constitution says of the President, "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."

The advice and consent of the Senate typically comes after the treaty has been negotiated by the President.  As reported by Justia (a legal information site), "The Senate’s role in relation to treaties is essentially legislative in character."  In a Supreme Court decision in 1936, this was affirmed by the Court's decision, which said, that the President "alone negotiates. Into the field of negotiation, the Senate cannot intrude" (United States v. Curtiss-Wright Export Corp., 1936).   However, for the treaty to become active, the President must secure approval by the Senate, with a two-thirds majority vote, as stipulated by the Constitution.

the exact role and status of women in the roman world, and indeed in most ancient societies, has often been obscured by the biases of both ancient male writers and 19-20th century ce male scholars, a situation only relatively recently redressed by modern scholarship which has sought to more objectively assess women's status, rights, duties, representation in the arts, and daily lives; and all this from almost exclusively male source material dealing with a male-dominated roman world.

women in mythology

unlike some other ancient cultures such as the greeks who had formed a creation myth where woman was a creature secondary to man and, more specifically, in the form of pandora, a bringer of unhappiness and vices, the romans had a more neutral approach where humanity, and not specifically the male, was created by the gods from earth and water. ovid's metamorphoses, for example, does not specify whether the first human was a man or a woman. at least in a physical sense then men and women were not regarded as belonging to a different species as in the greek world, a view often reiterated in roman medical treatises.

the industrial development of cities in the ruhr area in the nineteenth century is described. the research was based on english and german language sources. several factors that shaped growth and paths of the cities were categorized and analyzed. they are locations, resources, traditions, entrepreneurs, and technological developments. locations and resources were the most important among them; other factors may be regarded as consequences from locations and resources. among the cities, bochum, essen, gelsenkirchen, and dortmund had the richest resources and most favorable locations in the transportation network and grew to be the largest cities in the ruhr area near the end of the nineteenth century. riverside location was also a favorable factor for the development, as shown in the development of duisburg on the confluence of rhine and ruhr. resource distribution can explain the rise of textile industry, metallurgical industry, and coal and iron industries, and the northward progression of the mining industry. tradition was an important factor for cities such as krefeld, barmen, elberfeld, solingen, and remscheid, which experienced development based on their traditions through the nineteenth century. various entrepreneurs exerted influences within and beyond the local level over the ruhr area. technological development stimulated the northward progression of the mining industry and the deep connection between the coal and the iron industries.