WH spokesperson says Congress has to take initial steps
Two successive legislatures must approve measure before referendum
President delivered speech at State Department
'It reflects his deep commitment to these issues'
Arlando Teller represented Navajo Nation
Full chamber expected to vote on measure Friday
A passion for both words and numbers
'They brought joy and light whenever we saw them'
Successful career with AOL, Amazon, others
New secretary of state backs ambassador-level envoy