President Bush continues to assert expansive executive powers. He vetoed a bill that attempted to put explicit limits on the types of torture techniques that can be used on prisoners.
Here is the President's message to Congress and here is the full information about the bill: H.R. 2082, the “Intelligence Authorization Act for Fiscal Year 2008. Here is the Congressional Research Service report on the bill.
The veto message says nothing about torture techniques, only that the bill places a burden on the executive.
By the way, this is the ninth veto of President Bush's term. Eight have occurred since Democrats took over Congress.