I had to read this three times to make sure I understood what you are sayingt here. YOU ARE THE PARENT. I would HOPE that you discussed dating, possible age to begin dating, etc. It seems as though you think setting boundaries will make you lose your daughter. WRONG. The job of parents is to guide, set boundaries, help kids with problem solving, conflict resolution, etc. NOT to be their best friend.
In addition, race should have nothing to do with it. I understand that parents have their preferences, however, if he is mature, TREATS HER WITH KINDNESS AND RESPECT, then how about group dating only until 16 or whatever. There ARE ways to get around this without allowing her to date one on one.
In addition you need to discuss the "rules" or guidelines or whatever you decide to call them. DISCUSS THEM TOGETHER and decide together what are appropriate reprecussions of NOT abiding by the guidelines. That way SHE has a part of it and it shows you respect her opinion. AGAIN, she can have a say, but as parents, you should have the FINAL say.
You need to be on the same page as your husband. Talk about a compromise (group dating or whatever) but you should NEVER let a child come between you and your husband. You need to work as a TEAM. If/when a child knows or suspects this, they WILL play one parent against the other to get their way even if they don't realize the strain it puts on your relationship. They aren't mature enough to care. It's about what they want.
THEREFORE, work it out between the two of you and set guidelines and boundaries for dating and stick to them. Maybe he needs to be a part of family game night, have dinner at your house a few times, etc in order to see how he treats your daughter FIRST and then you can make a decision from there.
IF she doesn't like that idea, then maybe he's not treating her the way she should be treated.