The State Department is proposing requiring applicants for business and tourist visas to post a bond of up to $15,000 to enter the United States, a move that may make the process unaffordable for many.

The State Department said its new pilot program is aimed at making sure foreigners don't overstay their visas, by requiring travelers to post bonds.

The U.S. State Department has started a program that will require some visitors to post bonds for as much as $15,000 to obtain a business or tourism visa.