Of course it has always been unconstitutional. However, the Supreme Court ruled in 2012 that because Obamacare contained a tax provision, that it fell under Congress' purview to levy taxes and therefore passed constitutional muster even though it violated the Interstate Commerce Clause. Last year Congress repealed that tax, commonly known as the individual mandate.
Texas and 20 other states argued that without that tax, the whole ACA is now unconstitutional and Judge Reed O'Connor agreed. He did not grant an injunction against Obamacare. It appears that this matter will again head to the Supreme Court. Bear in mind that in 2012, it was only because of the tax provision that the Court ruled it constitutional. That tax provision no longer exists. The Court admitted in 2012 that without the tax, Obamacare is unconstitutional.
It should be noted that O'Connor was appointed by George W. Bush. Does anyone believe that any judge appointed by a Democrat president would have ruled correctly? Elections matter - even when the candidates are not sterling.
Now about the Catholic hierarchy - when are they going to start crabbing about this development? Many of them were supporters of the Hell Bill, abortion provisions notwithstanding. Will they once again make fools of themselves? Of course that question is rhetorical.
As for the president,
As I predicted all along, Obamacare has been struck down as an UNCONSTITUTIONAL disaster! Now Congress must pass a STRONG law that provides GREAT healthcare and protects pre-existing conditions. Mitch and Nancy, get it done!— Donald J. Trump (@realDonaldTrump) December 15, 2018