The anti-nepotism statute says nothing about putting the president-elect’s children and in-laws on the transition team //Legal Ethics Forum:

Legal Ethics Forum: The anti-nepotism statute says nothing about putting the president-elect’s children and in-laws on the transition team
by Richard Painter (former White House Ethics Counsel - GW Bush administration)

because the transition team members are not government employees.

They just can’t get appointed to government jobs.  So there is nothing illegal about the president elect’s son-in-law joining the transition team and blackballing for cabinet positions everyone who knows the prosecutor who sent his father to jail.

Ethics?   At this point, probably not relevant.

https://www.law.cornell.edu/uscode/text/5/3110