Some migrants say President Bush's decision to put up to six-thousand troops along the US border won't deter them from trying to sneak across the Rio Grande.
A Salvadoran man at a shelter in Mexico says he has no work in his country, so if the troops turn him back at the border, he will "try again." And a Honduran man says he'll "swim the river" and "jump the wall" to get into the US.
A spokesman for Mexican president Vicente Fox says Mexico respects Bush's move as "a sovereign decision."
US ambassador to Mexico Tony Garza is defending Bush's decision. He says the US has the right as a "sovereign nation" to make the border more secure.