Rust on garlic and other allium crops is a periodic problem, one that has been increasingly more notable over the past decade in western Oregon.  This spring/early summer has been ideal for outbreaks of rust on allium crops.  Avoiding the planting of allium crops for a period of time is the most effective approach for managing the problem.  However, this fungus can overwinter on volunteer garlic and onions, or on wild hosts, so these types of alliums also need to be managed in order to try and "eliminate" the pathogen.  See https://pnwhandbooks.org/plantdisease/host-disease/garlic-allium-sativum-rust for additional recommendations for management of rust on garlic.  There are chemicals registered for commercial crops but none that I would recommend for treating a residential garden area.

If a moratorium decision is reached, it is important to scout for rust on the allium vegetables once they are re-introduced, in order to detect and eliminate early infections, which will slow rust disease pressure.