What do you think prevents nurses from using their power to influence healthcare?

APRN/Nurse-Leader Policy-Influencer Interview
Choose policy influencer to interview, in which you identified a nurse practicing at an advanced-practice or leadership level with whom you planned to conduct a focused personal interview. The interview will provide us some real-life insight into the issues and topics under discussion in the course and will be submitted here as your initial post (IP).
Nursing is the largest profession in healthcare, which should lend nursing to have the greatest impact in healthcare policy. What do you think prevents nurses from using their power to influence healthcare?