It's the best nonelection year March on record for the RNC.
Almost half of his early donations reportedly were from individuals who gave $200 or less.
The tribute comes amid calls for a more progressive primary challenge to Clinton.
It will now accept donations from only six countries.
Christie also pushed back on perception of Clinton as inevitable Dem nominee.
Sanders is trying to determine whether he can raise the money needed to win, he said.
Only one of her four grandparents immigrated to the U.S., contradicting her claims.
“If it’s somebody in my life that I care for, of course I would."
The White House hopefuls are touting proposals to lower taxes and simplify the IRS code.
“It’s not what she says, it’s what she does," Sanders said.