The U.S. Department of State (DOS) has announced that, as of June 4, 2010, nonimmigrant visa fees have increased at its U.S. embassies and consulates worldwide. In the Federal Register notice announcing the move, DOS explained that increases are necessary because an independent study from August 2007 to June 2009 concluded the agency "is not fully covering its costs ... under the current cost structure." Petition-based visa fees for temporary workers -- such as H-1B, L-1 and O-1 -- increased from $131 to $150. E-1 (treaty trader) and E-2 (treaty investor) visa fees increased almost 300 percent, from $131 to $390. For additional detail, please consult the Federal Register notice.