Русско-англо-русский юридический словарь

The term basic law is used in some places as an alternative to "constitution", implying it is a temporary but necessary measure without formal enactment of constitution. A basic law is either a codified constitution, or in countries with uncodified constitutions, a law given to have constitution powers and effect. The name is usually used to imply an interim or transitory nature, or avoid attempting a claim to being "the highest law", often for religious reasons. In West Germany the term "Basic Law" (Grundgesetz) was used to indicate that the Basic Law was provisional until the ultimate reunification of Germany. But in 1990 no new constitution was adopted and instead the Basic Law was adopted throughout the entire German territory. Basic law is entrenched in that it overrides ordinary 'statute law' passed by the legislature.

The Special Administrative Regions of the People's Republic of China, namely Hong Kong and Macau, have basic laws as their constitutional documents. The basic laws are the highest authority, respectively, in the territories, while the rights of amendment and interpretation rest with the Standing Committee of the National People's Congress of the People's Republic of China. (Wikipedia)

Family reunification is a recognized reason for immigration in many countries because of the presence of one or more family members in a certain country, therefore, enables the rest of the divided family or only specific members of the family to emigrate to that country as well. (Wikipedia)

Family Reunification vs Family Reunion. Both terms are used interchangeably by international bodies (Council of Europe, European Union, Unesco etc.) and no specific scope has been identified for either. The Parliamentary Assembly of the Council of Europe (PACE), for example, uses ‘family reunion’ [e.g. in Recommendation 1686 (2004)] but more often “family reunification��� [e.g. in Rec 1703 (2005)]. (Council of Europe)

Convention refugees can travel to 20 European Union countries visa-free and have an explicit right to family reunification under section 56 of the International Protection Act 2015. (Dublin Inquirer)