Per Boto and Cloudformation documents (https://docs.aws.amazon.com/eventbridge/latest/userguide/eb-tagging.html, or see Boto return types for EventBus and Rule), "In EventBridge, you can assign tags to rule[s] event buses". In Troposphere, events.EventBus has Tags, but events.Rule does not.
Per Boto and Cloudformation documents (https://docs.aws.amazon.com/eventbridge/latest/userguide/eb-tagging.html, or see Boto return types for EventBus and Rule), "In EventBridge, you can assign tags to rule[s] event buses". In Troposphere, events.EventBus has Tags, but events.Rule does not.