What if your VP Operations isn't failing because she lacks talent—but because the track limits disappeared at the border? US executives operate in documented boundary systems—RACI charts, explicit decision rights, formal authority transfers. Mexican business culture relies on relational architecture—trust-based authority, credibility built over time, decision rights that emerge through demonstrated judgment. When US companies expand south without translating their boundary systems, they create dangerous conditions: executives with formal authority but no relational foundation. The result is predictable—hesitation, stalled decisions, frustrated founders, and confused executives. Cross-border track limits require translation, not just documentation. Build hybrid boundary architecture by making invisible differences visible, investing in relational foundation-building, creating bridge protocols, and assigning cultural translators who've operated successfully in both environments.