Everywhere this bill has been
1 steps
Introduced
In committee
Reported out
Passed House
Passed Senate
To President
Became law
Nov 10, 1990
Pocket Vetoed by President.
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Latest action
Pocket Vetoed by President.
Cite this page
U.S. Congress. (2026). H.R. 4638: Orphan Drug Amendments of 1990. 101st Congress. Open America. https://openamerica.io/bill/101-HR-4638/
"H.R. 4638: Orphan Drug Amendments of 1990." 101st Congress, 2026, Open America, https://openamerica.io/bill/101-HR-4638/.
H.R. 4638, 101st Cong. (2026), https://openamerica.io/bill/101-HR-4638/.
[H.R. 4638: Orphan Drug Amendments of 1990](https://openamerica.io/bill/101-HR-4638/)