WASHINGTON — President Obama will preside this week over an unusual meeting of the United Nations Security Council poised to adopt a binding resolution that would compel all countries to put in place domestic laws to prosecute those who travel abroad to join terrorist organizations and those who help them, including by raising funds.

The resolution, proposed by the United States, would also for the first time establish international standards for nations to prevent and suppress the recruiting of their citizens by terrorist organizations, and bar the entry and transit across their territory of suspected foreign terrorists.

Already, several European countries and other nations are putting new laws and administrative rules in place, although the extent to which each state enforces these provisions, experts say, will no doubt be balanced with their own policies and priorities.

Counterterrorism officials say the weight of a Security Council resolution could strengthen and unify the legal and political framework to help stem the flow of fighters to conflicts like those in Syria and Iraq, and help address the longer-term threat of battle-hardened Westerners, including Americans, returning to carry out attacks in their home countries.