From Breitbart news:

The White House, moving toward a constitutional showdown with Congress, asserted executive privilege Thursday and rejected lawmakers’ demands for documents that could shed light on the firings of federal prosecutors.
President Bush’s attorney told Congress the White House would not turn over subpoenaed documents for former presidential counsel Harriet Miers and former political director Sara Taylor.

This is a breaking news update. Check back soon for further information

I figured this would go to the courts to decide just as it did when Nixon was president and everything was being subpoeaned by Congress.

We’ll see how this pans out.