While the country is immersed in Obamacare headlines and a congressional tussle over delays and mandates, the Obama administration is stealthily moving toward unprecedented control over private property under a massive expansion of the Environmental Protection Agency’s Clean Water Act authority. The proposed rule, obtained by the House Science, Space, and Technology Committee in advance of EPA Administrator Gina McCarthy’s testimony at a Thursday oversight hearing, widely broadens the definition of waterways over which the federal government has jurisdiction to as little as a water ditch in a backyard. The Clean Water Act redefinition of “waters of the United States”...