A horrific image of a Salvadoran migrant and his young daughter who drowned in the Rio Grande at the United States-Mexico border has shocked the world and stirred debate over President Donald Trump's asylum policies. /VCG Photo

Images showed Oscar Alberto Martinez, 25, and his 24-month-old daughter Angie Valeria lying face down near the river bank, after trying to swim across the Rio Grande last Sunday. /VCG Photo

The bodies were transported to forensics in Matamoros, Tamaulipas State, Mexico on Wednesday. /VCG Photo

Their deaths brought Trump's controversial asylum policies back into focus as officials criticized his migration clampdown. U.S. presidential candidate Bernie Sanders said Trump's crackdown on migrants made deaths more likely. /VCG Photo