Within the U.S., the Obama presidency will be mainly measured by the success or failure of his economic policies. And here, I fear, the monstrous stimulus package with which this administration stumbled out of the gate will prove to be Obama's Waterloo.

Summary

This quote suggests that the success or failure of the Obama presidency in the United States will be primarily judged based on his economic policies. The statement further asserts that Obama's initial approach of implementing a large stimulus package might ultimately become a significant setback for him, comparable to the Battle of Waterloo for Napoleon Bonaparte.