BBC News – “The obstacles to President Donald Trump’s border wall are not confined to the four walls of Congress. As areas are cleared to start building new sections, some landowners, including a butterfly sanctuary, have sued to stop the construction…The butterfly centre…sits on 110 acres near the southern tip of Texas – an area of low-lying marshes, brush and scrub forests, offering a variety of ecosystems that provide ample habitat for migratory species of all shapes and sizes. It is also flush along the Rio Grande River, which forms more than 1,260 miles (2027 km) of the 2,000-mile border between the United States and Mexico. That puts the small, private environmental preserve in the centre of a raging debate over immigration and national security – and whether and where to build Donald Trump’s oft-promised border wall.

…South Texas is a funnel of sorts for animals that winter in Mexico and burst into the northern climes as the weather warms. It’s also the closest point in the US geographically to Central America, where a growing number of families have been fleeing poverty and political violence to seek refuge on US soil…”