Hi. What are the legal repercussions for an adult asking for sex from a minor via text messages, and…

Hi. What are the legal repercussions for an adult asking for sex from a minor via text messages, and trying to sext the minor? Can the messages be used as evidence against the adult? And what would the sentence be if it is a crime? If the adult is a foreigner and has fled the country, is the crime serious enough for him to be extradited? 

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