Jim Cramer says he'd buy Wells Fargo 'aggressively'

Shares of big banks, including JPMorgan Chase, Wells Fargo, Bank of America and Citigroup, were higher in premarket trading Friday after the Fed gave passing marks to all 23 banks that were subjected to the latest round of stress tests. Following those results, the Fed said it would lift temporary restrictions on dividends and share buybacks. CNBC's Jim Cramer, Carl Quintanilla and David Faber discuss.