None of the Big Four broadcast networks have indicated that they will air President Barack Obama's address to Congress on health care. Among other things, the nets have been waiting to hear when the address will start, with sources indicating Thursday night that the White House was leaning toward 8 p.m. After a brief honeymoon after Obama's January inauguration, the broadcast networks have become increasingly frustrated by the frequency of his requests for primetime coverage. The pre-emptions wreak havoc on the networks' schedules and cost millions of dollars in lost ad revenue. Regardless of the White House's final start-time decision, Fox is expected to sit out the Obama speech again, referring its viewers to sister cable channel Fox News.
