Conversation so far:
What was the United States sponsorship of Muhammad Zia-ul-Haq?
The United States, notably the Reagan Administration, was an ardent supporter of Zia's military regime and a close ally of Pakistan's conservative-leaning ruling military establishment.
Did the US sponsor Muhammad Zia-ul-Haq to come to the US or sponsored his actions?
The Reagan administration declared Zia's regime as the front line ally of the United States in the fight against the threat of Communism.
How did Pakistani people react to the tacit approval of the Reagan administration toward's Muhammad Zia-ul-Haq's overthrow of Bhutto?
Many of Pakistan's political scientists and historians widely suspected that the riots and coup against Zulfikar Ali Bhutto was orchestrated with help of the US Central Intelligence Agency.
Were there any protests regarding Zulfikar Ali Bhutto's governmental actions leading up to the coup?
The port city of Karachi, on the Arabian Sea 800 miles southwest of here, was the hardest hit, with work stoppages virtually paralyzing commercial activity.
What happened after the 1977 Pakistani coup in regards to public opinion in the United States?
Former US Attorney General Ramsey Clark widely suspected the United States' involvement in bringing down the Bhutto's government, and publicly accused the United States' Government after attending the trial.

Question: How did the US respond?
Self-contained rewrite: How did the US respond to allegations of aiding Bhutto's fall from government in Pakistan?