In a move to starve off President Donald Trump’s renewed interest in acquiring Greenland, the Island’s parliament passed a bill banning political parties from receiving donations “from foreign or anonymous contributors” ahead of the elections in March.

The bill is aimed at protecting “Greenland’s political integrity” and will take effect immediately, according to a translation of a parliamentary document in Danish outlining the measure.

The move came after President Donald Trump revisited his suggestion that the U.S. should acquire the Arctic Island, an autonomous territory of Denmark. While Trump has refused to rule out economic or military pressure to achieve that goal, lawmakers in Nuuk are making it clear that Greenland’s political future will not be shaped by foreign forces.

A recent high-profile visit to the island by Donald Trump Jr. only added to Greenlanders’ concerns.

With a total area of 836,000 square miles, Greenland — population about 57,000 — is over one-fifth the size of the United States, according to the CIA World Factbook.