Gov. Steve Sisolak and U.S. Sen. Ted Cruz are tangling on Twitter over the governor's decision to limit access to a pair of anti-malarial drugs that, while touted by President Donald Trump, have not been shown to be an effective tool against COVID-19.

It all started after Cruz, a Texas Republican and former GOP presidential hopeful, accused Sisolak of politicizing the pandemic after his Tuesday decision to partially ban the use of chloroquine and hydroxychloroquine for COVID-19.

The order restricting the drugs came after Trump touted the medication as a treatment and falsely stated that the Food and Drug Administration had just approved the use of chloroquine to treat patients infected with coronavirus.

Sisolak announced an emergency regulation prohibiting the drugs’ use in a statement that said there was “no consensus among COVID-19 experts or Nevada’s own medical health advisory team” that the medications were an effective treatment for the virus.

The first-term Democrat said the move was also meant to prevent people from hoarding the drugs, which he said did have other legitimate medical uses.

On Wednesday, Cruz wrote on Twitter: “During this crisis, we should listen to the science & the medical professionals,” Cruz tweeted on Wednesday. “The opposite approach: the Governor of Nevada, practicing medicine w/o a license—trying to score political points against Trump—& prohibiting NV doctors from prescribing medicines to treat COVID19.”

Sisolak hit back in a six-part tweet that sought to turn the accusation back on Cruz.

“Here’s the deal: medical professionals don’t want bad actors to harm Nevadans (or Texans!) by creating a shortage of critical drugs for those that need it the most,” Sisolak wrote. “We’re in a pandemic.

“As leaders, let’s stand together as Americans to forget the partisan politics, put the health & safety of our citizens first, & commit to sharing accurate information. We can mitigate and stop #COVID19 if we do it together.”