Yes, one should consider a number of issues before entering the U.S. under the Visa Waiver Program (VWP). As you may know, the VWP allows travelers from certain countries to visit the U.S. for business or pleasure for a maximum of 90 days without a visa. While having the option to enter the U.S. without a visa greatly facilitates one’s ability to travel, a visitor entering the U.S. in WB (B-1) or WT (B-2) status should note that s/he is not eligible to change, extend, or adjust status in the U.S. In other words, s/he must first depart and reenter the country. The only exception is in the case of the adjustment of status of applicants who qualify as immediate relatives. A visitor entering the U.S. under the VWP must provide a machine-readable passport, evidence of a foreign residence to which s/he will return, and evidence of financial ties to the home country.