The latest news on Senate
Lawmakers add their own take to immigration bill in committee.
Democrats claim GOP obstruction is baseless.
The Republican senator from Texas gets under Democrats' skin.
GOP opposition to Hispanic nominee could further negative stereotype.
Guns amendment would require the federal government to disclose what kind of guns it owns.
Amendments mount as Senate nears voting on immigration reform.
Legislators divided over provision for gay couples.
The New York Mayor's gun control group is running ads against senators who voted against background check legislation.
The gun issue is not prompting talk of liberal primaries for Democrats.
Republicans call on 'gang of eight' to do more on border security.