"Mexico is paying for the Wall through the new USMCA Trade Deal," Trump said in a Twitter message, in reference to the United States-Mexico-Canada Agreement.
Trump is expected to meet with the top Democrats and Republicans in the House and Senate later on Wednesday to discuss border security and the current shutdown.
The mentioned partial shutdown, which started on December 22, was reasoned by Trump demand to allocate more than $5 billion designated for the construction of a US-Mexico border wall. Democratic lawmakers and some Republicans have refused to meet the demand, and many have noted that the president previously promised that Mexico would pay for the wall.
The Mexican government has repeatedly said it would not pay for the wall, which was a central promise of Trump's 2016 presidential campaign.
In August 2018 Donald Trump announced that the construction has already started.