"We can't do it in a massive piece of legislation," Rubio said.
Lawmakers will debate the merits of presidential contenders across the shows.
Rand Paul, Bill de Blasio, John Kerry and Mitt Romney highlight this week's guests.
Homeland Security funding and the fight against ISIS will be among the topics.
“I want to make sure this is a realistic mission,” Sen. Chris Murphy said.
Mike Morell said NSA employees have "looked at boyfriends or girlfriends."
The former Defense secretary said modern wars lack "clear-cut" definitions of victory.
The Vermont Democrat says allies may say, "Hey, United States, you are on your own."
The Democrat predicts congressional opponents won't be successful in shutting it down.
The House Intelligence chairman said Obama's plan is making people "scratch our heads."
Giuliani said "you miss a lot of things" in campaign mode.
Americans are a "forgiving people," the RNC chairman said.
Rubio declined to comment on the bridge scandal on Sunday, saying it would be a mistake.
McCain said Gates was frustrated and "decided to really let loose."
The top Democrat on the House Budget Committee on Sunday blasted Paul.