Mark Schwartz, the U.S. Citizenship and Immigration Service (USCIS) Chief Information Office, said the agency is “streamlining the [E-Verify] process and making it capable of scaling if we bring more employers” into the system. E-Verify is currently voluntary, except for federal contractors and employers in states that require its use to varying degrees. But Sen. Charles Grassley (R-Iowa) introduced all-employer legislation in January and Rep. Lamar Smith (R-Tex.) is expected to offer another bill soon.