Mexico's central bank rolled out new regulations permitting purchases of local government securities to shore up money-market liquidity when stress emerges. The measure gives policymakers fresh ammunition to intervene if funding markets freeze or investors dump Mexican assets en masse.

The Bank of Mexico hasn't committed to buying bonds yet, but the framework signals readiness to act as a market backstop. By authorizing direct purchases of government paper, authorities can inject cash precisely where it's needed most during tightening periods.

This tool could prove vital if global investors retreat from emerging markets amid rising interest rates or geopolitical turbulence. The preemptive approach suggests officials learned lessons from past liquidity crunches where central bank intervention came too late.

Mexico joins other emerging market central banks strengthening crisis-fighting capabilities as global financial conditions tighten. Investors now have clearer guidance on how policymakers might respond if peso-denominated assets face sudden selling pressure.