In 1920, the Supreme Court applied the Supremacy Clause to international treaties, holding in the case of Missouri v. Holland, 252 U.S. 416, that the Federal government's ability to make treaties is supreme over any state concerns that such treaties might abrogate states' rights arising under the Tenth Amendment.
Age. To join the Military, you have to be at least 18 years old (17 with parental consent). As for the upper age limit, it depends on the Service and the program: Health Professions Scholarship Program (HPSP): 36 (for the Navy, you can be no older than 42 at the time you enter Active Duty, following your degree completionâunless you were granted an age waiver when you were recruited)
For most Enlisted programs, you must be at least 18 years of age (or 17 with your parentsâ permission) and no older than 34 years of age. For most Officer programs, you must be 19 years of age and no older than 35 years of age (keep in mind that waivers may be granted for positions in high demand).To learn about additional requirements associated with joining the Navy, visit the Qualifications & Commitment section of this site.or most Officer programs, you must be 19 years of age and no older than 35 years of age (keep in mind that waivers may be granted for positions in high demand). To learn about additional requirements associated with joining the Navy, visit the Qualifications & Commitment section of this site.