Spawr Optical Research, Inc. v. United States

How later courts describe this case

• holding that, where a witnéss had been convicted seventeen years earlier, but had been given probation and had not been confined, the date of the conviction controlled
• noting that Government provided evidence that defendant had “expressly negotiated the terms of the drug transaction,” and holding that “[t]his alone is clearly sufficient evidence to justify a conviction for conspiracy”
• characterizing as procedural, a "burden-of-proof enactment"