I was thinking about actual action, not just votes.
If Congress votes on Ukraine, shells are shipped immediately.
Even if they “Vote” on the border, first they do the assessment on endangered species habitat, then they look at potential groundwater contamination, then they consider possible soil erosion, then they consult the stakeholds on disparate impact on local racial minorities, then they negotiate with the local tribes on the statement of unceded territory...
Remain in Mexico could happen quickly after passage.