If the overarching question heading into the first debate of the 2020 presidential primary for Democratic voters was "Who can you see as president up there?" it's not certain they got a clear answer.

Rather than fireworks — toward each other or President Trump — the candidates took a cautious approach. Will that be the approach on Night 2, Thursday night, with Vermont Sen. Bernie Sanders and former Vice President Joe Biden on the same stage?

Here are five takeaways from Wednesday night's debate:

1. Elizabeth Warren was consistent

Massachusetts Sen. Elizabeth Warren controlled the debate early with a progressive policy pitch. She and New York City Mayor Bill de Blasio said they'd eliminate private insurance in favor of "Medicare-for-all." Former housing Secretary Julián Castro was aggressive on immigration, backing decriminalizing illegal border crossings.

The labor union for federal asylum officers is condemning President Trump's policy of sending migrants to Mexico as they wait for their assigned court dates in the U.S., calling the Trump administration's program "fundamentally contrary to the moral fabric of our Nation."

The asylum officers, who are tasked with carrying out a policy widely known as "Remain in Mexico," said they have a duty "to protect vulnerable asylum seekers from persecution," and that Trump's policy creates a conflict between their professional responsibility and the president's directives.

Louisiana officials announced a deal Wednesday with Asegua Therapeutics, a subsidiary of Gilead Sciences, that would allow the state to provide hepatitis C treatment to its Medicaid and prison populations. They also secured the necessary clearance from the federal government Wednesday for a novel approach to paying for the drugs and expect the program to start July 15.

The Republican-led Senate passed its own version of an emergency aid measure, approving a $4.6 billion package to pay some of the costs of the surge of migrants crossing the southern border.

The vote Wednesday came minutes after the Senate handily rejected the Democratic-led House's $4.5 billion bill passed Tuesday night, signalling what will likely be a contentious battle between the two chambers to reconcile the bills.