Australian Taxpayers Berned (quoting this):

Labor volunteers have been caught on hidden cameras bragging about using Australian taxpayer funds to work on a US presidential campaign and interfering with Donald Trump and Hillary Clinton campaign signs …

Former Australian National University Labor Club president Ben Kremer is identified in the video trying to remove campaign signs for Republican candidate Donald Trump in Manchester, New Hampshire, acknowledging in the secret recording that the tactics were not legal.

[…]

Western Australia Young Labor president Rebecca Doyle is identified in the video saying the ALP’s international branch had coordinated travel, accommodation and funding to assist the Sanders campaign, including $60 daily stipends.

No doubt that’s a part of what the FEC is now looking into on our side of the Pacific:

FEC Flags Thousands of Illegal Donations to Sanders’ Campaign

One of Bernie Sanders’ campaign features has been his eschewing of big donors, especially those on Wall Street.  He’s been quite vocal about his pride in collecting only small donations from the grassroots and damning the “corrupt campaign finance system.”

The Federal Election Commission, however, has flagged thousands of illegal donations to the Sanders campaign, including those from people donating over the limit and those from foreign nationals.