Brewer said last week the border cannot be declared safe until the people living near it feel secure from drug and human trafficking.
But Democratic Congresswoman Kyrsten Sinema of Arizona told Latino and black community leaders at a Phoenix luncheon Tuesday that Arizonans need to spread the word on how much more secure the border has become.
"There are lots of folks who don't live in Arizona who have no idea what the border is like," Sinema said.
Napolitano toured the border Tuesday afternoon with U.S. Customs and Border Protection Deputy Commissioner David Aguilar, Democratic Rep. Ron Barber of Arizona and Democratic Sen. Tom Carper of Delaware. Carper is the incoming chairman of the Homeland Security and Governmental Affairs Committee.
She said in a statement after the tour that border crossings are down 50 percent since 2008 and 78 percent since their peak in 2000.