NumbersUSA, which favors lower levels of immigration, is encouraging its network of some 2 million activists to attend town halls and send faxes and emails.

But Roy Beck, executive director of NumbersUSA, said he believes there's a lot of "hype" around the August recess that has been in part built up by the pro-immigration groups.

"This may be their only chance" to build momentum for immigration reform, Beck said.

He added that he didn't think it would work. Beck said he believes many Republican lawmakers may hold fewer town halls, in part to avoid the heated immigration issue, or may decide to hold "telephone town halls" instead of in-person gatherings.,0,3990883.story

By Caren Bohan in Reuters

immigration reform

Updated: Fri, Aug 2nd 2013 @ 3:42pm EDT