Vice President Pence ripped Democratic Sens. Elizabeth Warren Elizabeth WarrenHarris joins women's voter mobilization event also featuring Pelosi, Gloria Steinem, Jane Fonda Judd Gregg: The Kamala threat — the Californiaization of America GOP set to release controversial Biden report MORE (Mass), Cory Booker Cory Anthony BookerBipartisan praise pours in after Ginsburg's death DHS opens probe into allegations at Georgia ICE facility Democratic lawmakers call for an investigation into allegations of medical neglect at Georgia ICE facility MORE (N.J.) and Amy Klobuchar Amy KlobucharSocial media platforms put muscle into National Voter Registration Day Battle lines drawn on precedent in Supreme Court fight Sunday shows - Ruth Bader Ginsburg's death dominates MORE (Minn.), all presidential candidates, for a recent failure to pass a disaster relief bill for Iowa, which is suffering from flooding.

"If you see Sen. Elizabeth Warren, if you see Sen. Amy Klobuchar, if you see Sen. Cory Booker and others come to Iowa asking for your vote, you ought to ask them why they voted against disaster assistance for Iowa," he said Friday.

He added that there will be "plenty of time for politics when 2020 comes around."

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"Right now Iowa needs disaster assistance and it's time for Congress to act," Pence said.

Congress is currently in a standoff on the issue. Senate Republican legislation provides $13.45 billion for recovery from recent disasters, including the Iowa flooding. The bill would give $600 million in food aid to Puerto Rico, but Democrats have argued that the island, which was decimated by Hurricane Maria in 2017, is in need of more assistance.

Sen. Patrick Leahy Patrick Joseph LeahyBattle over timing complicates Democratic shutdown strategy Hillicon Valley: Russia 'amplifying' concerns around mail-in voting to undermine election | Facebook and Twitter take steps to limit Trump remarks on voting | Facebook to block political ads ahead of election Top Democrats press Trump to sanction Russian individuals over 2020 election interference efforts MORE (Vt.), the top Democrat on the Appropriations Committee, proposed giving more aid money to Puerto Rico and $2.5 billion in new funding for areas affected by severe storms in the Midwest and Southeast. Republicans blocked his proposal.

Leahy and Senate Minority Leader Charles Schumer (D-N.Y.) on Thursday introduced a new bill that would give $17.2 billion in disaster aid, including $3 billion in assistance for the Midwest and Southeast.

Klobuchar, Booker and Warren are among more than a dozen Democrats who are competing for the party's 2020 Democratic nomination.