Why do members of congress involve themselves in casework

Casework not performed by members of Congress typically include legal work, divorce cases and child custody issues. Most members of Congress, such as Senator Harry Reid, include on their websites a description of casework and how constituents can obtain assistance through the member's office.

so, based on the research i've done. the u.s. government were always on a wild goose chase just to take down castro. he then retired his trone to his brother raul in 2008 due to some health issues. so it's obvious your answer would be:

castro had no allies from which he could receive aid.

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                                                    -wolfiewolffromsketch