yes, the risk is low, and proactive action taken like this will help keep it low. The risk is low until it isn't - and suspending travel while suggesting vulnerable populations avoid coming in to work will help keep the risk as low as possible for as long as possible.
If you read ahead on the CDC summary page (https://www.cdc.gov/coronavirus/2019-ncov/summary.html), you can see that they say that "It’s likely that at some point, widespread transmission of COVID-19 in the United States will occur."