Rep. Darrell Issa wants an explanation from the Obama administration about why Occupy protesters were allowed to put up tents in McPherson Square Park in Washington, D.C., in what he insisted was a violation of a ban on “camping” in the nation’s capital. The California Republican, who chairs the House Committee on Oversight and Government Reform, complained in a letter Tuesday to Interior Secretary Ken Salazar that $400,000 in recent landscaping upgrades to the park had been damaged by the “illegal camping” of Occupy participants. According to a press release issued by his office, Issa asked Salazar to explain “a...