Answer:
he was tried twice for the same crime.
Step-by-step explanation:
Double jeopardy clause occurs when a person is put on trial for an offense of which he has already been put on trial before. United States Constitution, states that no "person be subject for the same offense to be twice put in jeopardy of life or limb..."
This can only apply if the accused has already gotten a valid acquittal from a law court or conviction within the same jurisdiction. If this occurs, then the government or prosecutor cannot retry the accused/defendant.
Therefore, Frank Palko believed that double jeopardy would apply in his case because he was tried twice for the same crime.