The stopped clock principle
Given the senator's over-the-top history on the topic, I'm more than a bit surprised. But Sessions' proposal to strip government contracts from companies that hire illegal workers without properly vetting them is a needed measure to combat illegal immigration at its source: the supply side. The plan also offers the advantage of focusing on American employers, which are easier to influence en masse via congressional action than millions of illegal immigrants from dozens of other countries.
So I commend Sessions for the idea and wish him the best of luck in getting it through Congress. Considering the plan is attached to the minimum wage increase that took a big step toward creeping out of the Senate today, chances are pretty good that it'll survive.