In Supreme Court arguments today over Arizona’s immigration law, Chief Justice Roberts got to the heart of Washington’s approach to the issue:

The Obama administration has sued, arguing that those provisions conflict with the federal government’s role in setting immigration policy, but justices on both sides of the aisle struggled to understand that argument.

“It seems to me the federal government just doesn’t want to know who’s here illegally,” Chief Justice John G. Roberts Jr. said at one point.

To know is to be responsible. You see the problem Washington has here.