President Trump followed through on threats to veto the National Defense Authorization Act (NDAA) on Wednesday, complaining that it “fails to make any meaningful changes to Section 230 of the Communications Decency Act, despite bipartisan calls for repealing that provision.”  In his memo communicating his veto to the House he said that Section 230, absolving technology companies of liability for user-generated content, allows foreign countries to spread disinformation and therefore poses a threat to national security. Trump began targeting Section 230 after Facebook and Twitter began fact-checking his tweets. 

Trump also complained that the legislation “fails to include critical national security measures, includes provisions that fail to respect our veterans and our military’s history, and contradicts efforts by my Administration to put America first in our national security and foreign policy actions.” He also rejected the provision of the NDAA to rename military bases that honor Confederate figures despite bipartisan support. Trump opposed another provision which makes it more difficult to withdraw troops in accordance with his foreign policy plan.

Congress passed the NDAA with a veto-proof majority of more than two-thirds of votes in support and is expected to override Trump’s veto. 

The bill’s sponsor, Republican Sen. Jim Inhofe, plans to vote against the veto. But other GOP lawmakers including Sen. Lindsey Graham have sided with Trump. Graham did not vote for the NDAA and tweeted that he would vote to uphold the veto “unless effort is made to wind down Section 230.”

Congress will reconvene on Monday to vote on whether to override the veto. Trump has vetoed eight other bills, which have been upheld. This would be the first veto override of his presidency.