Scope and purpose
Applying the presumption against retroactive legislation, the Court addressed reliance on the former discretionary-relief framework when a plea was entered. The decision also addressed habeas jurisdiction under the statutory framework then before it.
Related rules and practical context
Conviction and plea dates, the former eligibility rules and subsequent authority matter. Do not confuse former §212(c) relief with Form I-601 or the unlawful-presence waiver framework. INA §242 governs many current judicial-review questions.