Obama: financial regulation bill urgent, crucial

WASHINGTON (Reuters) - U.S. President Barack Obama said on Tuesday that a new financial regulation bill introduced by fellow Democrats was urgent and crucial to prevent excessive risk-taking by big financial firms.

"We cannot meet these tests with a set of small changes at the margin," Obama said in a letter to Barney Frank, chairman of the House of Representatives Financial Services Committee, that also stressed the importance of building a stronger financial system in which no firm was "too big to fail."

(Reporting by Ross Colvin; Editing by Eric Walsh)