Our Washington bureau interviewed regulators and lawmakers at a Reuters finance summit today.

FINANCE-SUMMIT/WOLINDeputy Treasury Secretary Neal Wolin told us he did not see any national security concerns with Deutsche Boerse’s planned takeover of NYSE Euronext.

FDIC Chairman Sheila Bair said America’s big international banks should restructure their operations unless they can prove that they can easily be broken up if they start toppling during a financial crisis.

Republican Representative Scott Garrett, who chairs the House panel overseeing mortgage finance giants Fannie Mae and Freddie Mac, said the House of Representatives will likely approve legislation revamping the way Americans finance their homes by year’s end.

House Financial Services Committee Vice Chairman Jeb Hensarling plans to introduce in weeks or months legislation that would wind down mortgage giants Fannie Mae and Freddie Mac within five years.