Most bills can originate in either the house of representatives or the senate; however, bills dealing with government spending must begin in the house of representatives.

Most bills can originate in either the House of Representatives or the Senate; however, social bills dealing with government spending must begin in the House of Representatives.

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.

hope this and have a fantastic day!

                                                    -wolfiewolffromsketch