The Border wall

After coming into office vowing not to build another foot of former President Donald Trump's border wall, Biden signed an order on his first day in office to pause all wall construction and to end the national emergency declaration on the southern border.

Biden later ordered that military funds President Donald Trump had tapped for the project be re-allocated, leading to a Republican-requested inquiry into whether Biden had inappropriately re-directed congressionally approved funds.

Property owners near the border have complained that despite the pause, the government is still seeking to seize borderlands for future construction using a process known as eminent domain.

Dozens of eminent domain cases brought by the federal government remain open and could take years for the courts to decide.

Some wall construction sites remain abruptly abandoned, with building materials strewn about, as construction had been ongoing right up until the moment of Biden's order to halt.