Do US Colleges have Open Admissions? Thanks.

Yes, US Colleges have Open Admissions.

Open Admission generally means that the admission process is not selective. Admission is offered if a student has a high school diploma or GED certificate.

There are public, private independent, private liberal arts, and private religious colleges that are open admission. In addition, community colleges or colleges which grant Associate degrees also offer Open Admission.

Issue:
Please be aware that there are some controversies surrounding Open Admission Colleges - their graduation rates tend to be low, college standards are lowered, and the need for remedial courses increases. 

To find a list of US Colleges and Universities with Open Admissions, check out https://blog.prepscholar.com/open-admission-colleges.

Hope this gets you started.