I understand this question to mean "what can a minister of sports (presumably in the US?) do so that sports serves a nation builder"
Sports can be a nation builder when it unites the nation, as when for example all the people cheer for one team. So the minister can for example support national teams.
Sport can also increase people's standard of life, so the minister can support local sport facilities - healthy people mean a healthy nation.
Also, it can be a common goal, such as when a nation organizes some championships, so he or she can apply to host the Olympics for example.