Congress
Rosenthal was elected as a Democrat to the Eighty-seventh United States Congress, filling the vacancy caused by the resignation of Representative Lester Holtzman. Taking office on February 20, 1962, he was re-elected that fall, and then again to ten succeeding Congresses.
Rosenthal was a "regular" or machine Democrat, but held liberal views, opposing the Vietnam War early on and working on consumer protection issues.[2]
On May 17, 1962, Rosenthal read a statement into the Congressional Record praising the magazine Mad on its tenth anniversary.[3] (Rosenthal's district, NY-8, included the part of Manhattan where Mad's offices were.) "Mad Magazine...for the last 10 years has humorously pointed out the laughable foibles of business, labor, advertising, television, sports and entertainment – to say nothing of politics," Rosenthal said.[4]