Depends on the visa category. Family preference visas for siblings can have waiting lists in the decades. But family preference visas for spouses of citizens

Depends on the visa category. Family preference visas for siblings can have waiting lists in the decades. But family preference visas for spouses of citizens have no wait list. It's just the system is slow. We went through some of it long ago, her time here threw us into proximity, proximity turned to love. That meant an adjustment of status, her old visa became invalid when we applied, but you have permission to stay while such an application is being processed. A hair under 6 months from application to first interview, a hair under two years before she got conditional permanent residency. (And I think that timing was not a coincidence, they stretched it out to just below the point it wouldn't have been conditional.) I would be terrified to do that under the current administration.