Today on Cronkite NewsWatch, Senator John McCain is back in Arizona talking to his constituents. Will there be a repeat of last month's heated town hall meeting, or will he receive a warmer welcome? We have the story. Plus, from our Washington, D.C. Bureau, people are already forming a line outside the United States Supreme Court for two cases dealing with same sex marriage this week. And, we traveled to Nogales to see what the city, and its businesses, are doing to stay afloat.

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