It makes perfect sense

A Wisconsin Republican running in the race for the state's third Congressional district warned that the recent ruling striking down the state's same-sex marriage ban might lead to marriages between siblings. 

"We've got, for instance, two sisters, and these two sisters want to get married. They love each other. They are committed to each other. They want to spend the rest of their life together," attorney Karen Mueller, the candidate, said according to The Tomah Journal.