President Joe Biden’s brother Frank promoted his family ties to the White Houde in an advertisement for the law firm he advises.

CNBC describes the text of the Inauguration Day advertisement:

“The two Biden brothers have long held a commitment to pushing environmental issues to the forefront; the president-elect has vowed to rejoin the Paris Agreement and wants to set ambitious greenhouse gas reduction targets, for example,” the ad in the paper says.

“My brother is a model for how to go about doing this work,” Frank Biden says in the ad. “One of his central tenets is that one should never question another man’s or woman’s motives or assign blame to them. That way, you avoid creating a disparity that prevents any kind of coming together. You can of course question someone’s judgement, and that’s what we’re doing by bringing this to court.”

The ad suggests that the firm hired Frank Biden due to the “Biden reputation for and motivation to engage in philanthropic, social and environmental issues that presented themselves.”

Frank Biden serves a non-attorney Senior Advisor for the Berman Law Group, based in Boca Raton, Florida. The advertisement ran in the Florida-based publication, Daily Business Review and focused on the firm’s suit against sugar cane companies.

Frank Biden maintained in a statement that he “has never used my brother to obtain clients for my firm.”

“Our firm has long been involved [with] this lawsuit. Social justice is something I have been involved in for years,” he added.

After CNBC reached out to the co-founders of the firm as to whether or not “Frank Biden will be continuing to use the Biden name in future ads while his brother is president,” the response “did not provide answers to those questions.”