I concur that a hostile work environment based on sex can apply to a same-sex situation in Washington, D.C. There are, however, a lot of issues to go through before this would become a lawsuit. You would need to discuss this with counsel to figure out what to do. Also: if you are an unpaid intern, make sure you're determining whether this meets the definition of employment under the D.C. Human Rights Act. I don't remember if it does or not.
If one person made one such comment one time without any other context, the comment could not form the basis for sexual harassment liability. But things are rarely so simple. Usually there are other things said or implied, gestures, etc. Comment that someone is "hot" can easily be taken to imply sexual interest in that person, and if there's sexual interest, it is often possible to link the single comment to other things the commenter has said and done. A hostile work environment can result...
There are a lot of questions that would have to be answered, but you should consult qualified counsel on this. To say that you are not talking enough like a particular race or ethnic group is tantamount to admitting discriminatory motive. I recommend that you speak to counsel before you go to the EEOC or the Maryland Commission, and let your counsel help you draft your charges after learning all the details.
Sorry this is so preliminary, but are you bound by an agreement to arbitrate any such dispute under FINRA rules and processes? And can you describe in more detail what you were told to do and what you did to comply? Thanks.
Please describe the situation a little more specifically, as in what kind of case, who it's before (sounds like an EEOC administrative judge but not sure), and whether there is any scheduling order. Tell us whether discovery has been undertaken. Thanks.
Your facts suggest both a possibility of racially disparate wages and unlawful retaliation. You need to confer with an attorney, as, unfortunately, EEOC is unlikely to help you. If they are to help you, it is more likely they would do so when you present to them with counsel. Obviously, more facts are needed to determine the possible strength of your case.