On Sunday, Republicans urged the White House to take action against Syria. According to officials with the Obama administration, Syria crossed the so-called "red line" last week after using chemical weapons on their citizens. Though Republicans did call for action against Syria, most lawmakers don't seem ready to send troops to the conflict.

"The president has laid down the line, and it can't be a dotted line,” House Intelligence Committee Chairman Rep. Mike Rogers, R-Mich., told ABC’s “This Week.” “It can't be anything other than a red line.”

U.S. officials said last week that the government of Syrian President Bashar al-Assad probably used chemical weapons twice in March, amid a two-year civil war in which more than 70,000 people have been killed and hundreds of thousands more displaced.

“For America to sit on the sidelines and do nothing is a huge mistake," Georgia Republican Sen. Saxby Chambliss told CBS’ “Face the Nation.”

Arizona Sen. John McCain has been among congressional Republicans most critical of the president’s stance on Syria.

He argued on NBC’s “Meet the Press” that the red line strategy has given Assad a “green light” to do almost everything up to that point -- including the use of missiles, helicopter attacks and other civilian strikes that have resulted in “atrocities on a scale that we have not seen in a long, long time.”

However, he joined a bipartisan call this weekend against sending  U.S. troops into Syria.

"The worst thing we could do is put boots on the ground," McCain said.

He and fellow Hill lawmakers fear the chemical weapons could be more dangerous in the hands of U.S. enemies or those who might overthrow Assad. And he joined in calls for the United States to be part of an international force to safeguard the weapons.

“The day after Assad [leaves] is the day that these chemical weapons could be at risk,” Chicago Democratic Rep. Jan Schakowsky told ABC. “We could be in bigger, even bigger trouble.”

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