Read Senate Dems' letter to President Obama

Three Senate committee chairmen are urging President Obama to impose broad sanctions against Russia’s defense sector, as well as its energy and financial industries, in response to Russia’s alleged involvement in the downing of Flight MH17 last week.

In a letter Tuesday, Senate Foreign Relations Committee Chairman Robert MenendezRobert (Bob) MenendezSchumer: Obama 'very amenable' to helping Senate Dems in midterms The Hill's Morning Report: Can Trump close the deal with North Korea? Senate must save itself by confirming Mike Pompeo MORE (D-N.J.), Senate Armed Services Chairman Carl LevinCarl Milton LevinHow House Republicans scrambled the Russia probe Congress dangerously wields its oversight power in Russia probe The Hill's Morning Report — Sponsored by CVS Health — Trump’s love-hate relationship with the Senate MORE (D-Mich.) and Senate Intelligence Committee Chairwoman Dianne FeinsteinDianne Emiel FeinsteinSenate moving ahead with border bill, despite Trump Senate moderates hunt for compromise on family separation bill Texas official compares Trump family separation policy to kidnapping MORE (D-Calif.) asked Obama to consider penalizing Russia for “its material support” of pro-Russian separatists in Ukraine.

Read senators' letter to Obama

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Key Senate Dems to Obama: Broaden Russian sanctions