In 2008, Johnson, along with seven other senators, added $4 million to a Pentagon program to fund math and science education called STARBASE. Johnson's wife worked as a contract employee evaluating the program between 2005 and 2011. "Senator Johnson's support of increased funding for STARBASE was not an earmark under the definition of a congressionally directed spending item as defined by the Senate Rules," a spokesman for the senator said.
51 lawmakers report keeping significant portions of their portfolios in traditional bank accounts.
What industries does Johnson invest in?
Many assets can be tied to specific industries, such as finance, agriculture or natural resources. "Mixed" investments are assets not tied to a specific industry.
Johnson's estimated 2010 liabilities
What asset types does Johnson hold?
Assets are lumped into groups such as real estate, stocks, mutual funds or cash.
NOTE: "Mixed" investments are assets that are not tied to a specific industry. Charted change in annual estimated wealth is capped at 200 percent increase and 100 percent decrease for clarity. See the full methodology here.
SOURCES: Congressional financial disclosure forms, Center for Responsive Politics, Washington Post analysis.
About the data
The estimation of assets for lawmakers is based on calculating the midpoint of reported value ranges for holdings and liabilities that members of Congress list on financial disclosure forms. It does not reflect assets lawmakers are not required to disclose, such as personal residences and non-interest bearing bank accounts. The estimation is not intended to provide a complete portrait of the net worth of each legislator, but rather show their relative standing in Congress and how their holdings have changed over time.
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