Houston's mayor plans to file lawsuits against some of the nation's biggest travel Web sites including Travelocity and Expedia. Mayor Bill White wants to collect millions of dollars in unpaid travel taxes.

Here's why: When you check into a hotel, you pay hotel occupancy taxes. And Houston banks on its hotel taxes to pay for amenities like Minute Maid Park,

But travel Web sites basically rent big blocks of hotel rooms at what city officials call a bulk rate, then sell them to the public for a higher price.

Most of the Web sites pay hotel occupancy taxes only on the so-called bulk rate they pay for the rooms -- not the end price actually paid by the customer. So Houston's city government is hiring a law firm to take some of the big travel Web sites to court.

Get the full story at KHOU.com