Reid has escalated his tirade against the billionaire Koch brothers, who donate heavily to Republican causes, recently calling them "un-American" and accusing Senate Republicans of being "addicted to Koch."
Addressing the Conservative Political Action Conference in Maryland on Thursday, Christie told attendees that Republicans must rise above the vitriol and offer a more positive message.
"We have to start talking about what we're for and not continuing to rail against what we're against is because of one simple reason, our ideas are better than their ideas," he said. "And if you need any further example of that, just look at what's going on in terms of what they're for in Washington, D.C. What they're for in Washington, D.C. is to have the leader of the Senate Democrats stand up and rail against two American entrepreneurs who have built a business, created jobs and created wealth.
"Harry Reid should get back to work and stop picking on great Americans," he added.
MSNBC "Morning Joe" host and Christie pal Joe Scarborough on Thursday similarly slammed Reid for his war against the Kochs.
"To say that the Koch brothers are against everything that is good with America and calling them quote 'un-American,' that by definition is McCarthyism," he said.