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This sensing method is called surface-enhanced Raman spectroscopy (SERS), and it’s not new. But the chip that Gan’s team developed is noteworthy for its high performance and low cost. 183

to obtain potential smoking-gun documents and testimony from acting White House chief of staff Mick Mulvaney, Secretary of State Mike Pompeo and former national security adviser John Bolton. Or Democrats could move forward with the evidence they have.House Speaker Nancy Pelosi has chosen the latter.In some of her most direct comments to date, Pelosi said Thursday they wouldn't delay their impeachment push to fight for those witnesses through court battles, saying instead that would be up for the Senate to decide in a potential trial about whether the President should be removed from office."They keep taking it to court and no, we're not going to wait until the courts decide," she said. "That might be information that's available to the Senate in terms of how far we go and when we go, but we can't wait for that because again it's a technique. It's obstruction of justice, obstruction of Congress, so we cannot let their further obstruction of Congress be an impediment to our honoring our oath of office."Pelosi added: "We cannot be at the mercy of the courts."Pelosi at this point does not look like she can count on any Republican votes to impeach Trump. House Minority Leader Kevin McCarthy told CNN that he was not going to lose any members."I think we are going to gain Dems," McCarthy, a California Republican, said Thursday.Rep. Eric Swalwell, a Democrat who sits on House Intelligence and Judiciary committees, said "it's more relevant" that any information the key witnesses may be able to share."We're not going to chase any of these obstructers into the courts anymore; we have a solid case. We have evidence of abuse of power, of extortion, bribery, obstruction of Congress," Swalwell said. "And we're going to consider all of that evidence as we make a determination on what should be sent if anything to the Judiciary Committee."But as soon as Monday, the court could throw a wrinkle in the process 1924

trade accounted for roughly 60 percent of the industry's losses.San Diego County's unemployment rate has trended down since June and is at its lowest level since May, when the county rate sat just below 3 percent.EDD estimates found California's unadjusted unemployment rate at 3.9 percent while the U.S. unemployment rate sits at 3.6 percent. 343

Thus far, we've not received cooperation from DOJ and the special counsel's office in scheduling those interviews voluntarily, George Hartmann, a spokesman for Grassley, said in an email. 187

This was a tough call to make — F8 is an incredibly important event for Facebook and it's one of our favorite ways to celebrate all of you from around the world — but we need to prioritize the health and safety of our developer partners, employees and everyone who helps put F8 on, the company said in its announcement.Facebook's announcement came days after the CDC said community spread of the virus in America was "inevitable," and asked Americans to prepare for disease to make an impact on their daily lives. The CDC confirmed the first case of coronavirus from 567

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