The ACU, the oldest membership-based conservative group in the US, has issued a letter strongly endorsing immigration reform. One more sign that immigration reform WILL happen this year. Here's the ACU statement:

"President Obama and the liberals in the Senate have planned for a
long time to use executive power and push legislation that would
legalize those immigrants here illegally quickly with no border
security, no interior security, and no reform of our legal immigration
process.  Given President Obama's history of executive action, simply
opposing immigration reform should not be the conservative response to
this problem.  We believe conservatives should be leading the way on
this issue by supporting legislation that upholds conservative

Conservatives are ready to support immigration reform, so long as it
is pro-economic growth, strengthens families, fosters assimilation and
prevents another wave of illegal immigration from happening again.  The
immigration bill being taken up in the Senate is an important starting
point in the effort to improve what even those opposed to the bill agree
is a failed and broken system.  The bill includes triggers to insure
border security and interior security before any immigrant is given
permanent legal status.  It includes a guest worker program that moves
us toward a merit-based system.  Notably, these are all key features
that President Obama has vociferously opposed and undermined during his
four years in office and are provisions that conservatives have been
advocating for decades.

This legislation is not perfect.  We do not expect the bill without
amendments to pass, and we encourage good-faith amendments to improve
the legislation.  We are encouraged by the starting point that Senator
Rubio and his Republican colleagues have gotten leading liberals in the
Senate to agree to.  We believe they are working in good faith to
improve the bill and we support a fair, open and transparent legislative
process.  We ask that conservatives in the Senate work to improve the
legislation.  America needs immigration reform.  As the Democrats run
the Senate, the ball is in their court.  They can work with
conservatives to improve the legislation to foster growth and security
and help be a part of solving the problem.  Or they can undermine it, by
putting partisan politics over sound public policy."