On May 24, 2010, the Supreme Court held in Lewis v. City of Chicago, No. 08-974, that fire fighters alleging disparate-impact discrimination could assert a claim under Title VII of the Civil Rights Act of 1964 even though they had failed to file a timely charge of discrimination with the U.S. Equal Employment Opportunity Commission after the City's adoption of the challenged practice. Rather, the Lewis Court held that the question of whether the plaintiffs could pursue their action turned on the subsequent application of that practice. In so holding, the Court highlighted important differences in when claims of disparate impact — as opposed to claims of disparate treatment — must be brought under Title VII.