Democratic senator Sherrod Brown is subtly accusing President Barack Obama of sexism in his attacks on Senator Elizabeth Warren, also a Democrat.

“I think the president was disrespectful to her by the way he did that … made this more personal,” Brown told reporters.

“I think referring to her as her first name, when he might not have done that for a male senator, perhaps — I’ve said enough.”

As GOP strategist Rory Cooper noted, “Sherrod Brown accuses President Obama of sexism towards the head of the Democratic Party.”