In the letter to Mr. Lew, the senators say that to avoid confusing the banks, the C.F.T.C. cross-border guidelines should not take effect until the Securities and Exchange Commission completes a separate set of derivatives rules.
The C.F.T.C. has diligently issued its required rules under the Dodd-Frank law over the past three years and has set a deadline of July 12 to put the cross-border guidelines into effect.
Recently, Mr. Schumer, Ms. Gillibrand and four other Democratic senators wrote to the Treasury secretary, Jacob Lew, seeking his help in shelving crucial "cross-border" guidelines on derivatives from the Commodity Futures Trading Commission.
"Doing so should not expose psychiatrists to risk or perceived risk under the Australian Border Force Act," the guidelines say.
In response to criticism, the border patrol issued revised guidelines in May 2014 that state that agents can use deadly force when there is a "reasonable belief that the subject of such force poses an imminent danger of death or serious physical injury to the officer/agent or to another person".
President Mahmoud Abbas of the Palestinian Authority, the leader of Fatah and the Palestine Liberation Organization, has rejected violence and seeks to negotiate with Israel to establish a Palestinian state in Gaza and the West Bank, using the 1967 borders as a guideline.
Mr. Rubio is expected to offer a proposal that would transfer responsibility for setting the guidelines of a border security plan to Congress from the Department of Homeland Security, and Senators Tom Coburn of Oklahoma and Bob Corker of Tennessee, both Republicans, are expected to introduce proposals of their own.
He said the administration is also instructing immigration and border agents to follow new guidelines to focus on certain undocumented immigrants for deportation, such as recent border-crossers, criminals and national security threats.
He noted, however, that children had greeted the new foods brought to them by the federal food guidelines with something bordering on disdain, tossing the additional fresh fruits and vegetables into the trash.
Under European Union guidelines, these cross-border students pay the same low tuition fees as native students — or in the case of Austria and some other nations, nothing at all — leaving governments to subsidize the education of other European countries' students.
