Vallis v. Lefkowitz

How later courts describe this case

• requiring payment of benefits under Black Lung Benefits Act for disability or death occurring prior to the effective date of the Act held not to be violative of the Due Process Clause of the Fifth Amendment
• Montana law exempting only state law school graduates from taking the state bar exam rational
• "The authority to practice law is not a fundamental right such as the right to the freedom of speech, the right to vote or the right of interstate travel”
• “It is clear that Congress intended to provide full protection to older, retired miners who have only recently discovered the disease or in whom the disease is still latent.”
• reciprocity rule upheld as no infringement on right to travel