With a little help from the
Supreme Court and
Mexico, US President Donald Trump's fitful crackdown on
immigration is finally gaining traction.
Trump has spent his entire presidency promising to stop illegal immigration, shut out asylum seekers and wall off the Mexican border.
Undeterred, Trump has hammered away, making construction of a US-Mexican
border wall one of his presidency's centerpieces -- and a key part of his 2020 reelection platform.