WASHINGTON, Apr. 10, 2006 (AP) The Bush administration may severely restrict the movements of Venezuela's ambassador if pro-government activists in Venezuela engage in any more "thuggish" activities against U.S. Ambassador William Brownfield, a spokesman said Monday. There have been four incidents of harassment directed at Brownfield in recent weeks, including one last Friday when his convoy was pelted with eggs, tomatoes and other food. The convoy was also pummeled by motorcyclists during a miles-long chase through Caracas. "If we see an incident like this again, I think that there are going to be serious diplomatic consequences between our two countries....