The Senate voted overwhelmingly to confirm
The vote was 71-27, with 18 Republicans supporting the prominent Latino Democrat.
Castro, 39, has served for three terms as mayor of San Antonio, and was the keynote speaker at the
Castro's nomination moved swiftly through the Senate even as Majority Leader
The next round of changes could be aimed at reducing blocks of time reserved for debating nominations.
Castro becomes the second Latino in Obama's Cabinet, joining Labor Secretary