I have been helping to pay for his care packages.
There are a number of requirements to claim someone as a dependent. One of the requirements for a person over the age of 19 who is not a student, is that you pay over one-half of the person's support. Considering the cost to incarcerate someone, it is very unlikely that by helping to pay for his care packages, you pay over half the cost of his support. Even if you did, you would still have to meet the other requirements.
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Not under the circumstances you describe here.
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