Sen. Chris Murphy Christopher (Chris) Scott MurphyDemocratic senator calls for 'more flexible' medical supply chain to counter pandemics The Hill's 12:30 Report - Presented by Facebook - Don't expect a government check anytime soon GOP chairman to release interim report on Biden probe 'in about a week' MORE (D-Conn.) on Sunday ripped President Trump's tweet about a planned visit to Missouri while Tropical Storm Harvey continued to leave devastation in its wake in parts of Texas.

"My god. At this exact moment people are dying in the worst natural disaster of his Presidency & instead of leading he's attacking Democrats," Murphy tweeted.

My god. At this exact moment people are dying in the worst natural disaster of his Presidency & instead of leading he's attacking Democrats. https://t.co/KCenUeRDW4 — Chris Murphy (@ChrisMurphyCT) August 27, 2017

Murphy's comment comes after a tweet from the president containing what appears to be a jab at Democratic Senator Claire McCaskill Claire Conner McCaskillMomentum growing among Republicans for Supreme Court vote before Election Day Democratic-linked group runs ads in Kansas GOP Senate primary Trump mocked for low attendance at rally MORE of Missouri, who's up for a third Senate term in 2018.

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I will also be going to a wonderful state, Missouri, that I won by a lot in '16. Dem C.M. is opposed to big tax cuts. Republican will win S! — Donald J. Trump (@realDonaldTrump) August 27, 2017

While the president has issued several tweets providing updates on Harvey, he took heat on Sunday for a series of unrelated tweets on NAFTA negotiations, his proposed border wall with Mexico and a plug for Milwaukee County Sheriff David Clarke's book.

A great book by a great guy, highly recommended! https://t.co/3jbDDN8YmJ — Donald J. Trump (@realDonaldTrump) August 27, 2017

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With Mexico being one of the highest crime Nations in the world, we must have THE WALL. Mexico will pay for it through reimbursement/other. — Donald J. Trump (@realDonaldTrump) August 27, 2017

We are in the NAFTA (worst trade deal ever made) renegotiation process with Mexico & Canada.Both being very difficult,may have to terminate? — Donald J. Trump (@realDonaldTrump) August 27, 2017

The president's tweets come as Texas grapples with severe flooding from Harvey, which made landfall in the state last Friday.

The death toll from the storm has risen to five, according to several reports.