Omnibus Not Necessary

That a solution is not comprehensive is not an argument against its adoption: 

It is a "familiar principl[e]" that a "'statute is not invalid under the Constitution because it might have gone farther than it did,' that a legislature need not 'strike at all evils at the same time,' and that 'reform may take one step at a time, addressing itself to the phase of the problem which seems most acute to the legislative mind.'"

New Orleans v. Dukes, 427 U.S. 297, 305 (1976) (quoting Katzenbach v. Morgan, 384 U.S. 641, 657 (1976)).