What are the common challenges applicants face when applying for an EB-1 visa?

Does peer reviewing for international journals carry more weight for an EB-1 visa application? What challenges do EB-1 applicants face in using peer review as evidence of extraordinary ability? How do I articulate my peer review experience in the EB-1 visa petition letter? Does peer reviewing multiple articles for a single journal weigh as heavily as reviewing for multiple prestigious journals in an EB-1 application? What are the potential career and residency benefits of obtaining an EB-1 visa compared to temporary work visas like H-1B? Can an EB-1 visa holder sponsor family members, and what are the associated requirements? What are the essential eligibility criteria for the EB-1 visa, and how do they differ among its subcategories? How does the EB-1 visa application process work, and what are the key steps to ensure success? What additional roles or responsibilities in the peer review process strengthen an EB-1 visa case? How can I demonstrate that my peer review contributions have impacted my field for the EB-1 visa?