The word "pragmatic" was looked up on Merriam-Webster's website an unprecedented number of times in 2011. Although the popularity of the word wasn't linked to any specific event, it received the greatest amount of interest in the latter half of the year, as the United States Congress introduced the Budget Control Act, and its Supercommittee began to craft deficit-reduction plans. "Ambivalence" was also a popular word throughout the year; John Moore, President of Merriam-Webster, remarked: "We think it reflects the public attitude toward a wide range of issues, including the economy, the ongoing debates in Washington, the presidential election, and most recently the race for the Republican Party nomination." The term "vitriol" was used frequently in the wake of the January 2011 Tucson shooting, which led to a national debate about political rhetoric.