Martin Kaste

Police departments have come under increased scrutiny from the Obama administration as the Justice Department's Civil Rights Division steps up investigations of corruption, bias and excessive force.

Some of the targeted law enforcement agencies have had ethical clouds hanging over them for years — the New Orleans Police Department being the prime example — but others, like the Seattle Police Department, aren't exactly usual suspects.

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The lawyer for the soldier suspected of killing unarmed Afghan civilians last week says his client may have suffered from diminished capacity, or in other words a mental breakdown. That possibility has focused attention on the Army's ability to detect and treat psychological problems among soldiers. NPR's Martin Kaste reports on how the Army's system works in theory and in practice.

Former Massachusetts Gov. Mitt Romney pulled way ahead of his rivals in Washington State's presidential straw poll on Saturday, with more than one-third of the votes. Romney finished well ahead of Ron Paul, who himself squeaked past Rick Santorum by just over 500 votes. Newt Gingrich had to settle for about one vote in 10.

Mandatory DNA collection is fast becoming routine in the American criminal justice system. In many jurisdictions, just being arrested can mean having to submit a genetic sample to the national database. Federal law enforcement and 26 states now permit various forms of pre-conviction DNA sampling and more states are poised to follow suit.