What 1950s U.S. film movement was inspired by neorealism?

French New Wave?

The New Wave (French: La Nouvelle Vague) was a blanket term coined by critics for a group of French filmmakers of the late 1950s and 1960s, influenced by Italian Neorealism and classical Hollywood cinema.

As with most art-film movements, the innovations of the New Wavers trickled down to American cinema. Beginning with the heavily evident stylistic similarities in Arthur Penn's Bonnie and Clyde (1967), the following generation of American young, studio-hired filmmakers referred to as New Hollywood, such as Altman, Coppola, De Palma, and Scorsese of the late 1960s and early 1970s all claim and display influence from the French tradition of the previous decade.