Protesters gather outside the Salvadoran embassy in Washington, DC, as US President Donald Trump hosted El Salvador's President Nayib Bukele, who is now the US leader's key ally in a controversial push to deport illegal migrants to a notorious Salvadoran prison. In a meeting at the White House, Bukele said he would not return Kilmar Abrego Garcia. The expulsion to El Salvador of Abrego Garcia has set off a major legal crisis, after the Trump administration admitted he had been deported in an "administrative error." IMAGES AND SOUNDBITES