In 1901 and 1902, the McMillan Commission under the leadership of Senator James McMillan, (1838–1902), of Michigan, modified L'Enfant's plan within a report that recommended a partial redesign of the capital city. Among other things, the Commission's report laid out a plan for a sweeping mall in the area of L'Enfant's widest "grand avenue", which had not yet been constructed. The McMillan Plan has since been instrumental in the further development of Washington, D.C. (See: History of Washington, D.C. in the 20th century).