I’m sensing desperation from the Uniparty. This may be their attempt to make it look like they are doing something about dhimmigration in order to dilute or defuse the Trump/Cruz message.
I don’t think the uniparty is panicked so much as seeing another opportunity to obfuscate and betray. More than likely they’ll gut the text of the bill and replace it with amnesty provisions or increases in immigration quotas.
It’s nothing personal, of course. It’s just what the uniparty does.