You worry for nothing. The courts never intervenes when it comes to how the House or Senate conducts their business. That is off limits. Merkley is showboating big time.
I hope you're right but I remember back to trumps travel. Even though the law said specifically the president has the power to do it, the slimebag Hawaiian judge put a TRO on it anyway, stopping it until the SCOTUS overturned him. Do you really think a lib judge resistance member wouldn't try their luck at this?