次世代
Since you have already had a Ph.D, it is not necessary to get another PhD degree unless you have new interests. In your case, you can either apply a funded phd or apply for research associate or post-doc position. There are many post-doc program in the U.S and I encourage you to contact the facuty whose interests match you research background and go for the phd!Let me know if you need other help!Name: KevinWechat: zyzhang5035