New Jersey state health officials are eyeing the playbook New York is employing to mandate compliance from out-of-state travelers – where $2,000 fines were introduced last week – as they try to prevent the nationwide COVID-19 surge from seeping back into the Northeast.

“At this point I would expect we would follow perhaps similar to what New York is doing, but we’d only do that if we find if personal accountability is not being upheld,” New Jersey Health Commissioner Judith Persichilli said Monday afternoon, at a press conference with Gov. Phil Murphy.

Persichilli said on Monday that there have been no enforcement actions taken by the state health department to date, though she reiterated there are a variety of tools at her fingertips to force compliance.

Under an order from New York Gov. Andrew Cuomo last week, air travelers flying into the Empire State from one of the nation’s 22 so-called “COVID-19 hotspot states” have to fill out a questionnaire including their contact info, where they’ve traveled and what their travel plans are. They must pledge to self-quarantine before they can leave the airport, and travelers who do not comply could face a $2,000 fine and “may be brought to a hearing and ordered to complete mandatory quarantine,” Cuomo’s office said.

New Jersey and Connecticut are also taking part in the tri-state pact.

Air travelers flying into the Garden State must also provide similar information as in New York when they land at an airport. Passengers will be reminded at the airport, while on the flight and once they land that they should take the survey.

But in New Jersey the questionnaire and 14-day self-isolation are entirely voluntary, and Murphy has stood by the position, saying that the U.S. Constitution prohibits any individual state from enforcing the self-quarantine.

“I would love to be able to stop people and turn them around at our borders whether that’s Newark Liberty or literally at our borders. We can’t. That’s not the way the United States works,” Murphy said last week.

New Jersey’s transmission rate for COVID-19 – or its spread – has slowly crept up since restrictions on businesses were lifted more than a month ago, starting with outdoor dining on June 15.

That number bumped up to 1.11 last week, the highest in months, meaning that for every person who got COVID-19, they spread it to at least one other person. The number clocked in at 0.9 on July 18.