Two themes have already emerged in the still-early 2012 presidential contest:Republicans are running against Washington and President Obama is running against part of Washington, the Congress that gave him his early legislative achievements.The newest entrant to the GOP race is Texas Gov. Rick Perry, who touched on one of the most emotional and volatile issues sitting on the nation's debate table: border security, illegal drugs from Mexico and illegal immigrants.In his announcement speech in South Carolina on Saturday, Perry said:America’s standing in the world is in peril, not only because of disastrous economic policies, but