Before we investigate the question further, let us understand the use of Grandfather Clause. A grandfather clause is an exemption that allows persons or entities to continue with activities or operations that were approved before the implementation of new rules, regulations, or laws. A grandfather clause only exempts people or entities engaged in specified activities before new rules being put in place, while all other parties must abide by the new rules. However, these clauses effectively place two sets of rules or regulations on otherwise similar businesses or circumstances, which can create unfair competitive advantages for grandfathered parties. In these situations, grandfather clauses may only be granted for a set period.
The origin of the term refers to statutes put in place after the Civil War by seven Southern states in an attempt to block African Americans from voting while exempting white voters from taking literacy tests and paying poll taxes required to vote. In the statutes, white voters whose grandfathers had voted before the end of the Civil War were exempt from taking the tests and paying the taxes under the grandfather clause. The statute was deemed to be unconstitutional by the Supreme Court in 1915 because it violated equal voting rights, but the use of the term indicating rights prior to rule changes carries on.
Depending on specific circumstances, grandfather clauses can be implemented in perpetuity, for a specified amount of time, or with specific limitations. In situations where this clause creates a competitive advantage for the grandfathered party, exemptions are usually granted for a specified period to allow existing businesses to make the changes necessary to comply with new rules and regulations. Clauses with specific limitations may also be put in place to prevent unfair competition, such as prohibitions on the expansion, remodelling, or retooling of an existing facility.
The term is actually not ‘grandfather you in’ but ‘grandfather in’ which means, to exempt certain people or businesses from new limitations or restrictions, thus allowing them to continue doing or benefiting from something as they did before. This can be done through the use of a "grandfather clause." A noun or pronoun can be used between "grandfather" and "in." but grandfather someone or something in means to protect someone or a right using a grandfather clause. Grandfather clause is discussed at the beginning of the answer.
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