The U.S. and Switzerland have agreed to terms that will end their legal showdown over the infamous "Swiss bank accounts" that are notorious for being shrouded in mystery. Barack Obama had recently signaled that he would aggressively pursue "financial havens" where people deposit money to avoid taxes or the attention of authorities. Switzerland's secretive banking system has made it one of the richest in the world, and the country fought hard against U.S. efforts to look at their books. The Washington Post reports that it is likely that a "substantial amount" of tax evaders store their money in Swiss accounts. The terms of the agreement between the U.S. and Switzerland are not yet clear.