It is important to clearly communicate whether you are applying to the Clinical or Medical Program, and whether you are applying to the Military or Civilian Track within those programs. The programs evaluate all applicants based on their previous scholastic achievements (i.e., grade point averages, coursework, and GRE scores), letters of recommendation, and the applicant’s responses to essays. The programs prefer that applicants have earned GPAs above 3.4 in their undergraduate studies and have combined GRE Verbal and Quantitative scores above 300 (combined scores of 1100 in prior GRE scoring system); however, these scores are not used in isolation to eliminate applicants from review. Faculty look for evidence that an applicant could be successful in the programs (e.g., experiences conducting research, engagement in clinical activities, unusual undergraduate grade patterns, success in graduate level courses, letters of recommendation, and military experiences [i.e., for military track applicants].
Information about which faculty will be taking new students as a research advisor is available here: https://www.usuhs.edu/mps/faculty_advisors
For general guidance about getting into clinical psychology graduate programs the website http://clinicalpsychgradschool.org/ has useful information and resources.