The phrase "approve a declaration" is correct and usable in written English.
It can be used in contexts where an individual or group is giving formal consent or agreement to a statement or document that has been presented.
Example: "The committee will meet next week to approve a declaration regarding the new policy changes."
Alternatives: "ratify a declaration" or "endorse a declaration".
He closed by asking that Congress approve a declaration of war against Japan, thus irrevocably engaging the US in World War II.
There is to be a high-level conference in Brighton in April – the third since 2010 – to approve a declaration on what needs to be done to ensure that the European convention on human rights and the Strasbourg court are effective in protecting the rights and freedoms of 800 million people.
The Senate has sole power to approve a declaration of war, debate treaties, approve nominations to the Supreme Court and decide the guilt or innocence of an impeached president, and put the final stamp on all vital legislation at the national level.
Congress has not approved a declaration of war since World War II.
Congress overwhelmingly approved a declaration of war on May 13, but the United States entered the war divided.
B6 BORDER PACT -- The United States and Canada approved a declaration calling for a "smart border," vowing cooperation on measures intended to guard against terrorists while speeding the flow of trade.
The United States and Canada today approved a declaration calling for a "smart border," committing the two nations to cooperation on a range of border control and law enforcement measures intended to guard against terrorists while speeding the free flow of trade.
Late on Friday in Washington, the OAS approved a declaration that rejected violence and called for justice for the 21 people the government says have died in street protests since 12 February.
In July the pope allowed priests to celebrate the traditional Latin (Tridentine) mass without the permission of a local bishop; he also approved a declaration from the Congregation for the Doctrine of the Faith that said only the Roman Catholic Church "has the fullness of the means of salvation".
The United Nations General Assembly recently unanimously approved a declaration committing nations to a more active battle against threat of microbial resistance to existing drugs, which is one of the most severe and rapidly growing threats to contemporary public health.
Bishops also approved a declaration that sets out guidance for parishes that reject female consecrations.
