Potential Republican presidential candidate Dr. Ben Carson on Wednesday said President Obama has a problem weighing in on law enforcement cases involving race. 

Carson, a black conservative, said in a wide-ranging interview on CNN that the shooting death of Michael Brown, a black 18-year-old, by a white police officer in Ferguson, Mo., was the latest example of Obama speaking out, when he shouldn’t.

“I probably, had I been him, would not have gotten involved in the first place,” Carson said. “We have to allow our system to work without biasing things, and we really should never take sides in these issues while the legal process is in the process of playing out.”

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"I do think there is a problem when you weigh in on situations like what happened with Dr. Henry Louis Gates, saying that the police acted badly," Carson continued, referencing a 2009 incidentwhen Obama said police "acted stupidly" when arresting a Harvard professor who was trying to break into his own home in Massachusetts. 

"Why not let that system play itself out and let the system take care of that, rather than weighing in and creating prejudice in an effort like that?"

Carson suggested the same standard applied in the 2012 case of Trayvon Martin, a black 17-year-old shot dead by a neighborhood watch volunteer in Florida.

"You really must, particularly as the commander in chief, be levelheaded and even-handed and always upholding the rule of law," said Carson, a retired neurosurgeon.

Carson did give Obama some credit on Ferguson, adding, "The president has to uphold the rule of law. I think he has tried to do that, certainly since the verdict came out."

Last week, shortly after a grand jury declined to indict Darren Wilson in the death of Michael Brown in Ferguson, Obama spoke from the White House briefing room, where he stressed that "we are a nation built on the rule of law."

"I also appeal to the law enforcement officials in Ferguson and the region to show care and restraint in managing peaceful protests that may occur," he said. The televised address was seen on one screen, while violence in Ferguson was shown on another. 

Carson on Wednesday clarified his remarks on "The Hugh Hewitt Show" last week that "things have gotten worse because of his [Obama's] unusual emphasis on race."

“I said that race relationships have gotten worse during his time. I don’t blame it all on him," Carson said on CNN.

Carson, seen as a favorite White House contender among many conservatives, told CNN he would "certainly" decide before May 1 on whether to launch a 2016 bid.

"There is no question that we are putting together an infrastructure," he said. "I believe in always being prepared so that if you do make that decision you do not start out behind the eight ball."

GOP voters ranked Carson second among potential 2016 Republican presidential nominees in a CNN/ORC poll released Tuesday. Carson snatched 10 percent support, trailing only two-time presidential contender Mitt Romney.