The U.S uses a substantial presence test to calculate residency.
Lippman wrote that the world has changed dramatically over the past two decades, where an entity can have a profound impact elsewhere through the Internet, and the physical presence test may now be outdated.
Although the three plus months spent here at the start of 2012 falls short of the 183 days required for residency status in the U.S., the substantial presence test should be enough for most players to be considered U.S. residents for 2012.
The Spanish double world champion, whose presence at the test drew a huge crowd and led to traffic jams on the way to the track, improved to a 1:20.966 on his next run and then 1:20.493 - just 0.1secs off the fastest time of the test so far, set by Schumacher on Friday.
BBC: Nick Heidfeld heads Fernando Alonso at his Renault test
Dr Goldstein, however, realised that Lunar Prospector could be used to test for the presence of water directly albeit only once.
Late Wednesday, his lawyer, Howard Jacobs, acknowledged he'd received a written statement that the carbon isotope test showed the presence of synthetic testosterone.
At present doctors test for the presence of abnormal proteins called prions which are thought to cause the disease by killing off brain cells.
Further work is being carried out to establish exactly how much horsemeat these products contain and to test for the presence of the veterinary medicine phenylbutazone, or bute.
So it ought to be possible to test for the presence of a certain antigen on a surface by dragging a suitable antibody over it, and seeing if it gets stuck going fishing, in effect, on a molecular scale.
She said all had tested negative for horse DNA, but one test had indicated the presence of some pork.
At this point, a woman can undergo the more complex genetic test to confirm the presence of the mutated gene.
On Wednesday the Food Standards Agency said it would co-ordinate a UK-wide survey of beef products to test for the possible presence of horse or pig DNA. There will be "additional emphasis on brands at the lower end of the market, particularly for burger-type products", it said.
Cairn says it has found natural gas in thin sandlayers in one of its test wells, indicating the presence of oil.
The FSA has asked retailers to test beef products for the presence of more than 1% of horsemeat, with anything above that figure considered to be a sign of adulteration.
The presence of BPA in lab equipment meant to test for BPA has clearly been distorting the data.
To properly diagnose Type 1, doctors need to test for antibodies that indicate the presence of the autoimmune disorder.
The only reliable way to tell the difference is to take samples from the burn patterns and test them in a laboratory for the presence of flammable or combustible liquids.
In this next step in the investigation, scientists will examine Khan's brain, the liver and even solid organs to try and detect the presence of cyanide so they have more than one test showing it's what killed him -- and a better sense of how it was introduced into his body.
CNN: Lottery winner exhumed; cyanide deaths rare, experts say
The latest product withdrawal comes as the Food Standards Agency prepares to announce the results of industry test results on hundreds of processed beef products for the presence of horsemeat.
The exercise was conducted in 2003 through the voluntary completion of a questionnaire by drivers who had failed or refused a breath test or who when tested passed on amber which indicated the presence of alcohol in their breath.
Findus has been ordered to test the lasagna withdrawn from the shelves for the drug's presence.
Findus has been ordered to test the lasagna withdrawn from shelves in the United Kingdom for the drug's presence.
CNN: Meat industry under scrutiny as horsemeat scandal spreads
One test during the study involved analysis of the man's faeces and this revealed the presence of polio.
The use of the PSA test to diagnose prostate cancer is controversial because raised levels of the protein do not always indicate the presence of cancer.
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