President of the Soviet Union
On 4 May 1990, after the declaration was adopted, the Communist Party of Latvia resolved that it was unconstitutional, contained notable contradictions and historical inaccuracies, and noted that such issues should be decided by referendum. The Communist Party deemed that the declaration might trigger the President of the Soviet Union to take countermeasures, therefore the party should launch a propaganda campaign against the declaration and ask the President of the Soviet Union to annul the declaration of the Supreme Soviet. On 14 May 1990, the President of the Soviet Union Mikhail Gorbachev issued a decree stating that the declaration violated the Constitution of the Soviet Union and the Constitution of the Latvian SSR and thus stood void from the moment of adoption.