The phrase "a motion to join" is correct and usable in written English.
It can be used in legal or formal contexts when referring to a request or proposal to become a part of a proceeding or group.
Example: "The attorney filed a motion to join the case, seeking to include additional parties in the litigation."
Alternatives: "a request to join" or "an application to join".
At the Henan Provincial People's Congress this year, two deputies introduced a motion to join the mainstream.
Last summer, Southampton Town filed a motion to join in their suit, which seeks removal of the groins, but its motion is still pending, said Stephen Brown, the town attorney.
On August 10 The Cheyenne River Sioux Tribe filed a motion to join the lawsuit.
Also joining the action late Sunday was the state of Hawaii, which filed a motion to join the other two states in the appeal over the travel ban.
With the British parliament rejecting a motion to join the United States in a military strike against Syria, Congress looked ready to vote against American action.
A14 Prime Minister Tony Blair of Britain, shaken by the resignations of three ministers, defended a government motion to join the United States and back "all means necessary" to disarm Iraq, surviving the greatest challenge by members of his Labor Party in his six years in office.
Of the 1,187 members of Labor's central committee who voted Tuesday, 680 supported the motion to join the coalition, and 507 opposed it.
The motion to join the suit was brought by the American Society of Media Photographers, the Graphic Artists Guild, the Picture Archive Council of America, the North American Nature Photographers Association, and several individual photographers.
In his motion to join the suit, Josh also states that while his sisters have been "forced to confront traumatic experiences" and had the "most private and painful aspects of their lived [sic] exposed," they received "sympathy worldwide".
On Friday, Josh filed a motion asking to join the case, claiming that he has "suffered severe emotional distress, embarrassment, humiliation and economic harm both to his personal and professional reputations" as result of In Touch's bombshell report that alleged he molested underage girls.
Nonetheless, petitions were circulated at the meeting that asked Robert M. Morgenthau, the Manhattan district attorney, to join a motion to overturn the convictions.
