WASHINGTON -- A slowdown on the Capital Beltway is nothing unusual, but what is rare is when someone is deliberately causing the gridlock. A California-based group, opposed to a federal pilot program making it easier for a number of Mexican truck companies to make cross-country trips in the U.S., is threatening to make travel on the Capital Beltway a nightmare. Save America Fund is planning a three-day protest, urging truckers to form side-by-side convoys and circle the Capital Beltway right at the speed limit. The protest is set to run from Monday through Wednesday from early in the morning until 5 p.m. Maryland State Police are increasing patrols along the Beltway and are "prepared for anything, if something does materialize." Similar protests will be held nationwide. (Copyright 2007 by Metro Networks Communications Inc., A Westwood One Co.) WASHINGTON -- A slowdown on the Capital Beltway is nothing unusual, but what is rare is when someone is deliberately causing the...