Amundsen nominated Trump along with his fellow Progress Party colleague Christian Tybring-Gjedde.
In contrast, say Mr Trump's supporters, Mr Obama's successor has made a historic breakthrough in Korea that could potentially put an end to what has always been regarded as one of the most intractable conflicts in the world.
A group of Republican lawmakers has nominated Trump for the Nobel Peace Prize for his efforts to bring North Korea to the negotiating table - a stunning turnaround from a year ago, when Washington and Pyongyang found themselves locked in a bitter war of words and threats that some feared could lead to nuclear war. They argued that President Trump had already earned this distinction due to his efforts to remove nuclear weapons from the Korean Peninsula.
While the Norwegian Nobel committee is appointed by Parliament, its decisions are independent. Trump neglected to notify South Korea, or the US military, of those plans before the press conference. This year, however, the alarm was set off, and the Nobel Institute even linked the police to the case, because they thought the Trump nomination was fake.
The last American to win the prize was former President Barack Obama, who won in 2009.
Critics say it is too premature to hail Mr Trump's diplomacy in Korea as a success. A record 330 people were nominated this year. The Nobel Committee does not reveal the names of the nominees for 50 years. "I think that we can do by sending a clear signal by giving Trump the peace prize".
Per-Willy Amundsen echoed his remarks, saying that it would not be the first time that a Peace Prize was awarded to someone in the midst of a process.
The process of considering candidates for the honour is carried out in Norway, and nominations must be sent to the Nobel committee before February.