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A resurgence of the New World screwworm, a flesh-eating maggot, threatens Texas livestock and is straining US-Mexico relations. The US has twice closed the border to Mexican livestock due to the outbreak, a move Mexico's President considers exaggerated. While Mexico reports declining cases, the US is investing $30 million in releasing sterile male flies, a method previously successful in eradicating the pest. Texas is also exploring alternative control methods, prioritizing economic protection despite the border closure debate.

Prepared by Olivia Bennett and reviewed by editorial team.