You're confused. The president of the United States is not just "some guy". He is elected by the citizens of the United States to head the executive branch. Besides, you're assuming two more things:
1. That there has been no vetting (100% false - FBI vetting began in early December)
2. That they have or need access to any information requiring clearance
1. That there has been no vetting (100% false - FBI vetting began in early December)
2. That they have or need access to any information requiring clearance