HOUSTON _ In recent days, images of squalid conditions for migrants held by the Border Patrol have been made public by a congressman, federal government inspectors and advocacy groups.
Meanwhile, the Border Patrol has reported the deaths of additional migrants in custody and has launched an investigation into a private Facebook group purportedly used by agents to post obscene and racist statements, some mocking migrant deaths.
Meanwhile, on Sunday, President Donald Trump tweeted that news media accounts _ many of which are based on the images and descriptions of federal inspectors and elected officials _ are "phony and exaggerated."
With the number of controversies spiraling as overcrowding at the border increases, here's a look at questions concerning the latest developments: