And I cannot allow that stabilizing factor in the world to be undermined.

WHITEHOUSE: THE WHITE HOUSE

But what I told my former colleagues today is that we simply cannot allow differences over individual elements of this plan to prevent us from meeting our responsibility to solve a longstanding and urgent problem for the American people.

WHITEHOUSE: President Obama Meets with Senate Leaders

"I take the view that with our economy in such dire straights we simply cannot afford to allow so many of our people essentially to be signed off into different areas, " he said.

BBC: Is incapacity assessment working?