Cucurbits are monoecious; there are separate male and female blossoms on the same plant. The male flowers tend to open first, followed by the female flowers. It is only when both the male and female flowers are open that pollination can occur.
There is nowhere in the Constitution that says that the Congress can subpoena the President of the U.S. or his people. Congress does however have general subpoena powers, but they are not absolutely clear. There are Supreme Court cases that speak to this. They generally limit this to national security type of issues.
A subpoena is a writ, a written order, issued by a court which commands a person to appear in court or before a grand jury, a congressional committee, or administrative agency at a specific place and time.he attorneys in a case have to request subpoenas, which are usually issued by the trial court clerk's office. The court rules of some jurisdictions allow attorneys to issue subpoenas themselves as officers of the court.