CNN Money: Kellyanne Conway's plug from the White House: 'Go buy Ivanka's stuff'
Larry Noble, the general counsel of the Campaign Legal Center, a nonpartisan organization of election law experts, said that in his opinion, "She may have violated the law..."
Noble said the president's tweet was "totally out of line."
"He should not be promoting his daughter's line, he should not be attacking a company that has business dealings with his daughter, and it just shows the massive amount of problems we have with his business holdings and his family's business holdings," Noble said Wednesday.