HUIXTLA, Mexico -- Mexican border agents and police broke up a caravan of hundreds of migrants Sunday who had set out from southernmost Mexico — the fourth such caravan officials have raided in recent days. The group of about 800 — largely Central Americans, Haitians, Venezuelans and Cubans — had spent then night at a basketball court near Huixtla, some 40 kilometers (25 miles) up the road from the border city of Tapachula... President Andrés Manuel López Obrador said Thursday the strategy of containing migrants in the south was untenable on its own and more investment is needed in the...