302 Applicability of federal law or the law of other states in civil actions and proceedings

When a civil case depends on federal law or another state's law to decide an issue, that same federal or out-of-state law also controls how any legal presumptions about the facts work. In other words, if the substance of your claim or defense comes from federal law or another state's law, you have to look at that law to see how presumptions affect the case, not Kentucky's usual rules.

This matters because presumptions can shift who has to prove what. For example, a presumption might mean that once one side proves a certain fact, the other side automatically has to disprove something, or the fact is treated as true unless challenged. This rule makes sure that when Kentucky courts are applying another state's law or federal law to a claim, they handle these presumptions the same way that other legal system would, instead of using Kentucky's own approach.

In short, this rule keeps things consistent. If the outside law is what decides the actual issue in your case, that same law also decides how strong or weak any related presumption is.