Foreign visitors to the U.S. arriving via air or sea no longer need to complete paper Customs and Border Protection Form I-94 or I-94W. Those who need to prove their legal-visitor status—to employers, schools/universities or government agencies—can access their CBP arrival/departure record information online.
CBP now gathers travelers’ arrival/departure information automatically from their electronic travel records. Because advance information is only transmitted for air and sea travelers, CBP will still issue a paper form I-94 at land border ports of entry.
See on www.cbp.gov