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Drones have become the U.S. weapon of choice in the fight against terrorism. But critics say the United States needs to be careful because its rationale for the use of the high-tech weapons could be abused by others.

Presidential hopeful Mitt Romney had been getting some attention for his critique that the president was politicizing the anniversary of Osama bin Laden's death. That is, until Obama flew to Afghanistan, signed an international agreement and addressed the troops and the nation.

This week Mitt Romney and Rick Santorum got their Secret Service code names: Romney is "Javelin," Santorum is "Petrus." Presidents have been getting code names back to Harry Truman, who was called "General." Ian Chillag and Mike Danforth of the podcast How To Do Everything look into how these code names are assigned.

The former vice president is recovering from a heart transplant he received over the weekend. Experts say it's unusual for a 71-year-old to get a transplant, but more and more older people are getting them as the procedures improve and the population ages.

The House is expected to pass a bill that would eliminate a board that is charged with reining in Medicare spending. But Democrats generally oppose the change, and President Obama has promised to veto the legislation if it ever gets that far.

Henry Louis Gates Jr. is perhaps best known for his research tracing the family and genetic history of famous African Americans. A selection of his writings on race, politics and culture appear in The Henry Louis Gates, Jr. Reader. Originally broadcast May 8, 2012.

The presidential candidate is getting lots of attention for his remarks about immigration in the latest GOP debate. But his statements are actually in line with the positions of Republicans from years past — Ronald Reagan included — and may help attract Latino votes.

Medicaid, the health program funded jointly by the feds and the states, was devised to cover the poor. But if a provision in last year's federal health law isn't changed, even people with pretty healthy incomes could qualify for Medicaid.

President Obama may have lost popularity among the community, but Hispanic voters looking for alternatives find problems with the Republican presidential slate as well — primarily with the rhetoric on immigration. GOP activists want to focus instead on the nation's struggling economy.

He believes in cutting taxes, rolling back regulations, balancing the budget and increasing domestic energy production. Here are a few other things politics watchers will tell you that you might not know about Perry.