This article originally appeared on Time.com.
Hillary Clinton went on a Twitter tirade Wednesday against Donald Trump, asking the billionaire 20 questions about reported conflicts of interest that he may have if elected.
The Democratic presidential nominee was referencing a Newsweek cover story arguing that the Trump Organization’s international business relationships could make it hard for a President Trump to conduct foreign policy.
In a post on her website, Clinton said that Trump’s career was “full of sketchy relationships with foreign countries.”
The posts comes amid a debate over Trump’s tax returns, which he has declined to make public, citing a pending IRS audit as prohibiting him from releasing his taxes.
In her tweets, Clinton questioned what Trump would make a priority—America or his personal investments.