The democrats in the US House of Representatives revealed two articles of impeachment against President Donald Trump Tuesday: abuse of power and obstruction of Congress.

The first article of impeachment, abuse of power, relates to Trump’s alleged dealings with Ukraine to “publicly announce investigations that would benefit his reelection, harm the election prospects of a political opponent (Joe Biden) and influence the 2020 presidential election to his advantage.” The article states Trump compromised national security to reap a personal political benefit.

The second article of impeachment, obstruction of Congress, relates to Trump’s “unprecedented, indiscriminate defiance of subpoenas issued by the House of Representatives pursuant to its sole Power of Impeachment.” The article says Trump directed executive branch officials not to comply with subpoenas, which obstructed the House’s power to impeach.

Republicans argue there is insufficient evidence as to whether Trump pressured Ukraine. The House could vote on Trump’s impeachment as early as next week, which would then start a trial in the US Senate. If even one article is approved, Trump would be the third president in US history to be impeached.