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administration is responding to it. we begin with matt. >> edward, day after day, we watch as so many of those migrants cross in to the united states right here in eagle pass, texas. we're seeing something unprecedented. the state of texas is bolstering its border here. these cargo containers were brought in before christmas and now over the past two days, we have watched as the national guard has put razor wire on top of those shipping containers. governor greg abbott's office tells us that its taking unprecedented action to enhance its border safety strategies. that's something tha...

>> it's looking more and more as if the supreme court will cut the heart out of health care reform law. that's the part which would require americans to buy insurance if that mandate is found unconstitutional and we won't know it until june. it's an open question whether the rest of the law could survive. the court wrapped up three days of historic arguments today. cnn's congressional correspondent kate bolduan and our legal analyst jeffrey toobin, they were both inside during the oral arguments. let's start with kate. what's your take, kate? how did it go today? >> wolf, after three...