"And I think that the fact it is making progress at the moment and yielding results already shows that that is the case.

VOA: standard.2009.07.22

Barack Obama in his decision-making is like a lawyer dissecting a case.

VOA: standard.2010.01.16

And Hollywood movies,like Avatar, are making a case for the environment.

VOA: standard.2010.01.23

In a speech at Carnegie Mellon University, President Obama referred to the Gulf oil spill in making the case that it is time, as he put it, to "aggressively accelerate the nation's transition to a clean energy economy."

VOA: standard.2010.06.14