President Donald Trump suggested delaying the 2020 election in a tweet Thursday morning.

The President pointed to quote "universal mail-in voting" setting the stage for "the most inaccurate and fraudulent election in history."

President Trump has increased his criticism of mail-in voting as parts of the nation look to expand the option in order to keep voters safe from coronavirus.

But Nichols College Political Science Professor Dr. Erika Cornelius Smith says any decision to delay the election would have to come from congress, which according to the constitution has the authority to set the general election date.

Dr. Smith said, "[President Trump] can't just unilaterally decide to delay the federal election. There are not only laws that regulate that but there are also constitutional provisions. For example the 20th amendment states that the terms of the President and VP shall end at noon on January 20. Even if the president were through some other mechanism to try to delay the election, his term and Vice President Mike Pence's term would still expire as scheduled."

Dr. Smith says seven states are already "vote by mail states."

Since 2000 Oregon has mailed more than one million ballots to registered voters and they've only documented 12 cases of fraud in the last 20 years.