Johnny45 has it exactly right. Read an interview with woman who was child in Austria when hitler took over. She said she is reliving her childhood now in US. She also points out Austrians voted hitler into power for promises of jobs and healthcare. They voted for hope and change
You should not be required to have a permit anywhere in us. That right is already been addressed and confirmed. That said I don't think you should every stop trying to increase your level of competence thru training