Hillary ClintonHillary Rodham ClintonFive big Trump narratives to watch NBC: Russia setting up dossier on Trump Chelsea Clinton attends Muslim solidarity rally in NYC MORE has a better plan for taking on Wall Street than Bernie SandersBernie SandersDrug importation from other countries will save dollars and lives Sanders: Trump a 'pathological liar' Buttigieg endorsed by ex-treasurer in DNC race MORE, according to Sen. Cory Booker.
The New Jersey Democrat was asked on CNN why he is supporting Clinton, given that Sanders's main issues include campaign finance reform and Wall Street.
Both Sanders and Clinton have talked about their plans to take on Wall Street.
In the past, Sanders has criticized Clinton for taking money from the financial sector, for campaign donations and speaking fees.
But Clinton said earlier this month that she is tougher on Wall Street than her rival, arguing she has the "most effective campaign plan" to take on the financial industry.