Passage Summary: Some politicians who were once big fans of the trade deal between the US, Canada, and Mexico are now staying quiet about bringing other Latin American countries into the mix.

Reasoning: There exists a group of politicians who previously supported free trade between North American nations but are currently not publicly supporting the expansion of free trade to other Latin American countries.

Analysis: Since this is a 'Must be True' question, we are looking for a statement that is logically guaranteed by the text. The stimulus establishes a specific overlap: people who are politicians, who supported the original free trade agreement, and who now refuse to support its expansion. Look for an answer choice that simply confirms the existence of this group or describes their characteristics without adding outside assumptions. It is a classic 'some' statement exercise where we must avoid over-extending the claim to 'all' or 'most' politicians.